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Nitrome Wiki
For the Flash game, see Gunbrick.
Platform Panic Gunbrick (mobile) Magic Touch: Wizard for Hire

Gunbrick, sometimes referred to as Gunbrick SD, is a puzzle-platforming mobile game for iOS and Android (Google Play and Amazon Appstore). The game was released for Android on Google Play on January 7th 2015[2], released for iOS on the Apple App Store and Amazon App Store on January 8th 2015, and on Amazon Underground on August 26th, 2015.

The game was silently revealed in 2012 on the Mobile page (titled "iPhone" at the time) under the name of "Top Secret" with no information about the game revealed until October/November 2014 when teaser trailers pertaining to it were released.


  • Swipe left/right - move left/right
  • Swipe screen and hold left/right - move left/right and continue in that direction
  • Tap screen - fire bullet


In Gunbrick, the player controls a Gunbrick that has to reach the finish pad found at the end of each level. A Gunbrick is a block that has a shield on one side of it that is immune to all damage and a gun on the other side of the block that can fire bullets. Gunbricks moves by rolling, caused by the player swiping the screen in the desired direction (left or right).

Firing is controlled by tapping the screen, each bullet fired moving the Gunbrick. Gunbrick is moved one block to the side if the bullet was fired in that direction, and one block up if the bullet was fired towards the ground.


55?cb=20120317190109 Incomplete section

This section is incomplete. You can help by adding the missing info.

Gunbrick has three level packs.


Gunbrick takes place in a future age where cars have become obsolete and a machine called Gunbrick has become a world wide sensation.[3]


The game opens showing the website Brick TV (which the protagonist is implied to be viewing) playing an advertisement for a new model Gunbrick before playing a short newscast that quickly transitions to a advertisement for Brickman. The protagonist then buys the new Gunbrick model and has it shipped to their building, and upon it arriving jumps into the box and begins controlling it. Rolling it out the window of their apartment and going through the next door building, the protagonist proceeds to explore the city with it.

The protagonists actions throughout the city in the Gunbrick attract the attention of the police, who dispatch police gunbricks to apprehend the player. Later on the player found by a large police gunbrick that demands that they stop, though a battle ensues when the officer tries to kill the player and ends with the player destroying the police gunbrick.

As squads of police gunbricks close in on the area, the player flees to Deeperfume Desert. Here, the player traverses the area and learns of a Mega Monsterbrick Rumble Mania[4], which they then try to get to. The player scales a tall tower outside the event and ends up in the arena's area where they fight a large monsterbrick, which they destroy. Getting first place, the player wins a ticket to Brickcon, a fan convention for various types of media.

Going to Brickcon, the player explores the area and ends up in a restricted area, though they later find a way out of it back to the main Brickcon area. However, further exploration causes the player to enter a larger restricted area that is protected throughout by various lock mechanisms. Though the player initially suspects they are the only ones in this area, a group of characters in space suits notice the player and charge into this area after them, also sealing this spot off with a giant Gundisk.

Solving further puzzles and advancing forward, the player enters a secret underground base area filled with various plans for brainwashing people through usage of the Gunbrick, and also coming across test subjects for this plan.

Penguin 1.png

This navigational box contains a spoiler. Click [show] to open the box.

As the player exits the area, the Brickcon area is suddenly attacked by Gundisk organization - the presumed instigators of this plan - who bring their giant Gundisks and men in suits in order to wreak havoc on Brickcon. As the player trudges through the rubble of Brickcon and the Gundisks' attack, the player manages to board one of the giant Gundisks, and encounter a brain controlled ring inside that tries to kill them. The player destroys this machine which destroys the giant Gundisk they are in, though the player emerges safe from the rubble, excited.


Penguin 1.png

This navigational box contains a spoiler. Click [show] to open the box.


The Free Avatars option on the menu screen.

Gunbrick related avatars for the game were added on January 14 2015, and can be accessed by clicking an avatars advertisement on the menu and then inputting the name and password to the user's Nitrome account.

The player has to be connected to the internet to get the avatars. If they are not connected, when trying to get them they will be redirected to the page to get the Icebreaker: A Viking Voyage avatars.

An option to receive the avatars is on the main navigation screen after the Pack 3. This icon shows a Gunbrick protagonist avatar emerging from a pink gift box. By selecting the icon, the device's browser will load, displaying a screen with the profiles module. The user can then log into their account to receive the eight avatars. Only users with access to the app can obtain the avatars.



CDN ($) US ($) GBP (£) EUR (€)
$2.99 $2.38 £1.63 €2.24


The earliest point in time Gunbrick was known to be in development was May 31st, 2012.[5] The game was silently revealed when the Mobile page, then called "iPhone", of was launched on July 12th 2012 [6], where it was called "Top secret", a name used to refer to it until its official reveal in 2014.

Upon the page's release, Gunnbrick was 20% complete. [7] Between August 15th[8] and August 18th 2012[9] the game's completion was increased to 25%. Nitrome presumably continued to work on the game from then on up until late January 2013, though work on the game may have been impeded during this time by Icebreaker A Viking Voyage, Nitrome's first mobile game which was in development and a major news item for them.

The game's progress was halted at the beginning of 2013[10][11] when Nitrome accepted Rovio's offer to publish Icebreaker A Viking Voyage, causing the staff working on the mobile game to be relocated to Icebreaker A Viking Voyage[12]. It is not known if development on Gunbrick started again after Icebreaker's release, though the game was being worked on in July 2013[13] and work continued through July 2014[14], the game having passed its 25% completion mark by May 2014.[15] Nitrome anticipated that Gunbrick would be completed and ready for release around the time the time the Kraken map pack for Icebreaker A Viking Voyage was going to be released (May 7th 2014), and so Nitrome hid a high resolution image of Gunbrick in the Kraken skin for as a teaser for Gunbrick, but despite these high hopes Gunbrick was not able to meet this release period.[16]

Unlike their previous mobile releases, Nitrome withheld all other information on Gunbrick aside from its completion status. This was due to the game's slow progress [8], and later to not detract from Icebreaker A Viking Voyage's exposure.[17] Although Icebreaker was a success and further mobile games had been released, Nitrome at the time felt that they were not yet ready to reveal information regarding Top secret.[18] By March 17 2014, the game's musician Eirik Suhrke had been commissioned by Nitrome to do music for the game. [19]

In late 2014, Nitrome revealed information about Gunbrick in the form of three teaser trailers released over the period of October-November 2014, each trailer spoofing a type of advertisement and also including jumbled up images of places from Gunbrick. On November 20, 2014 Nitrome revealed the game. By November 12 2014 the game had been completed and submitted to the Apple App store[20] and approved by November 21[21], with a projected release date of January 2015[22]. Nitrome was originally planning a much earlier release, but they later pushed it back as to not get involved with the competitive year-end holiday season on the Apple App store.[21]

A release date of January 8th, 2015, was decided in the new year. Despite this being the planned release date, the game was released a day early on Android[2] , but was released on the proper day for iOS and the Amazon App Store. The game was released on Amazon Underground on August 26th, 2015[23].

The settings in the game and the game's story were handled by Giuseppe Longo.[24]

Nitrome originally did not rule out the possibility of making future level packs for Gunbrick mobile [25] and later on expressed interest in making more, but cited that the many ongoing projects made it hard for them to guarantee to working on any more[26].


The first trailer, released on October 31, 2014, showed a block with a cat and a man and had the Japanese text "キティキャットブリック 愛すべき 歌舞伎�好きな 猫たちへ" (Kitty Cat Brick [:] Lovable Likes kabuki To cats), and also for a split second containing a jumbled up images of areas in the game, which appear to be a futuristic Japanese docking bay area with neon signs and floating ships.

The second trailer, released on November 7, 2014, showed a grayscale scene with a character sitting on an area overlooking an ocean, using a sort of perfume. The character spoke in French, saying "Water of 'Bovich', for men ". Jumbled up images of the game were shown again for a second, this time of a cave area in the game showing what looks to be an underground facility.

The third trailer was released on November 14, 2014, and showed an ad for a "Brickola" drink sponsored arena battle titled "Mega Monsterbrick Rumble Mania". Jumbled up images showed a drill, along with scenery from the jumbled up images in the previous video.

All of these trailer contained a blank screen at the end title "Loading..." with a different line shape at the end. When the frame containing these line shapes were all overlaid on each other as to include all the shapes, an image of Gun-Brick was created.

On November 19, 2014, Nitrome released an official trailer of the game revealing the game's name and more information about it.


The album's cover

Gunbrick's music was released as an album by Eirik Suhrke. The album consisted of 16 tracks, 12 tracks from the game, 2 being prototype tracks, and 2 being remixes of tracks the game. The music was free to listen to on the site or could be downloaded for a price starting at $4 US.



Click [show] to reveal this box

Mat Annal
Jon Annal
Giuseppe Longo
Aaron Steed
Level design
Aaron Steed
Giuseppe Longo
Eirik Suhrke
Sound design
Aaron Steed
Jon Annal
Tom McQuillan
Giuseppe Longo
Original concept
Mat Annal
Special thank to
The entire Nitrome team
our loyal fans :)

Flash version differences

55?cb=20120317190109 Incomplete section

This section is incomplete. You can help by adding the missing info.

  • The menu is slightly different from the Flash version.

Platform differences

While the Apple App Store version of Gunbrick mobile has achievements, the Google Play version lacks these as Nitrome was unable to implement the ability to log into a Google Play account, this due to the game's framework being different from Cocos2dx (what Icebreaker: A Viking Voyage is made in) and Unity (when Nitrome's free endless games are made in).[27]


Release version

This was the initial version of Gunbrick released on January 7th/8th for iOS and Android, being labelled 0.5 on iOS, 0.7 on Android and the Amazon App Store.

Further content

Nitrome has shown interest in making further level packs for Gunbrick mobile but are unable to commit to making anymore due to several other ongoing projects.[26] As of April 2nd 2015 they are currently not working on any more levels for the game. [28]


Beta elements

Unused sprites

All sprites in the game's sprites folder (/assets/game.swf/sprites) that were created to be used in the game's levels have the suffix MC# added after the name, with # being a number. Sprites that have the suffix MC but no number are sprites that were cut from the game.


The grills moved over by the electric spheres have a sprite for each pack, a light blue coloured one for Pack 1, a brown one for Pack 2, and a light purple one for Pack 3, though the Pack 1 grill goes unused due to electric spheres being introduced in Pack 2. The Pack 1 grill is found in /assets/game.swf/sprites/DefineSprite (948: TurnGrillMC1).

Magnet block

Magnet blocks are an unused game component in Gunbrick. A rough design of the object's sprite can be found at /assets/game.swf/sprites/DefineSprite (968: MagnetBlockMC) and the created sprite for the game component at /assets/game.swf/sprites/DefineSprite (2465: MagnetTileMC).

Magnet blocks appears as two horizontal rectangles with the top one being red with a + sign and the bottom one being grey with a - sign and a circle of metal bolts going around the inside of the block; part of the left side for each block is coloured in a colour of the opposite block. The rough design of the block appear as a block split into two diagonal parts, the right side being red and left grey.

Oddly, the sprite for the object still has its rough design and the created sprite for it is listed as an unused variation of magnet tiles. The presence of "Magnet" in its name may mean that it caused the magnet effect that is caused by magnet tiles.

Considering that even though it went unused after having a sprite created may point to it being cut rather late in development, as other Nitrome browser games have cut game components who only have a rough vector design instead of a proper pixel sprite.


Ledges are small thin platforms in Gunbrick that are found attached to the upper corner of platforms and also can be moved through and stood on if the player rocket jumps by firing bullets into the floor to move upwards.

At assets/game.swf/sprites/DefineSprite (968: LedgeMC) is what appears to be the temporary sprite of ledges, appearing as a horizontal thin grey box with black edges that has the same dimensions as the regular sprite for ledges, only lacking any design.


There is sprite located at /assets/game.swf/sprites that appears as a light blue sign that reads "STOP BREAKING MY BLOCKS" with "!!!", an angry Gunbrick civilian face, and "!!!". From the colour of the sign it was meant to be used in the background of a level of Pack 1. Though it was cut, signs with words on them that are used as background art are later used in the second half of Pack 3.

Wooden Gunbrick

Found in /assets/game.swf/images/ in the large sprite sheet of the game, in the upper right part of the image in the section with all the game's blocks (to the left of the column of people) are sprites of a wooden Gunbrick with a part of its blue glowing inside visible below its metal shield.

Unlike other Gunbricks, this Gunbrick has smooth curved edges on the top that has its shield, and the front part that has its cannon has a wooden-like appearance that makes its sides appear as though the entire front is very slightly cylindrical.

This Gunbrick has a sprite for facing all four directions, something shared by only other Gunbrick sprites that actually move in the game, though this particular sprite does not have any diagonal sprites for rolling.

From its appearance, this Gunbrick may have been intended to appear in Pack 2 (due to the presence of wooded object in that area), though this may not be the case due to this particular Gunbrick's polish and design which are not shared by any other objects in that pack.

Gear gunbrick variation

Present in /assets/game.swf/images/ in the large sprite sheet of the game, underneath the sprite of a firing gundisk are sprites of a Gunbrick with gears at its corners and exposed glowing hotspots on its sides between the gears. This same Gunbrick appears in level 1-3 in the construction site, only with the spots where its hotspots are being grey metal instead.

This Gunbrick was meant to be shot at, evident by the presence of its hotspots, and may have been intended to be an enemy or hazard. Notably, this is the only occurrence of hotspots outside of bosses.

Brown laser projector

In /assets/game.swf/images/ in the large sprite sheet of the game are sprites of an unused brown laser projector.

This laser projector is structured the same as regular used lasers with a few deviations: the brown laser projector has brown colours instead of the grey/light purple colours of a regular laser, the middle of the projector is different having an icon similar to that seen on the middle of a Gunbrick, the energy on the side is green, and the small square below the middle resembles an S.

From the appearance of this brown laser projector it was meant to appear in Pack 2, although why it was not used is not known.


Located in /assets/game.swf/images/ in the large sprite sheet are sprites of an unused metal pad structure. This structure appears as a metal pad attached to a vertical bar with a small square and light on it, this metal pad emitting a green electricity field.

This sprite has two animations and one sprite: an animation for operating (with the green field moving), an animation for being turned of, and a sprite for being off.

It is uncertain what this would have been used for, however, the presence of the bar likely shows that it would have been used in Pack 1 (as this bar appears frequently throughout Pack 1), and that the player would interact with it by moving on to it (indicated by the green electricity field).

Question mark switches

Present in /assets/game.swf/images/ in the large sprite sheet are sprites for a switch with a question mark. These switches appear square and grey with a line of bolts on the top of the switch, a green pad on top, and a small square screen in the middle with a question mark. Two animations for the switch exist: one where the green pad is up and the screen is grey, and one where the green pad is down and the screen is blue.

It is uncertain what they would have been used for, as other than the screen with the question mark, they do not seem to have any trait that differentiates them from the other used switches in the game.

White plus sign

Located in /assets/game.swf/images/ in the large sprite sheet are two 24x24 sprites of a blue background with a white plus sign on it, one of the sprites having the plus sign and background dark, while the other has the background and plus sign brighter.

Unused audio


Found in assets/game.swf/sounds/DefineSound (956: Advert1) is a 14 second audio file of a young adult male person with a British accent saying "In a room not like the room your in, using their heads in a sense of when used to connect and disconnect, pulls souls up lacks [maybe lots] of artists making contributions to the way music is splitted up into a billion different, available bits of sound." This sound file may have been used to test something during Gunbrick's development.

The unused sound


On March 26th, 2016, Nitrome posted on Twitter that Gunbrick on the Apple App Store had been given a special background[29].


Gunbrick was listed in the iOS App Store's "Best New Games" section on January 8 2015, along with winning an "Editor's Choice" award.[30] Gunbrick was selected by Pocket Gamer one of the best games of January 2015. [31]

On April 5th, 2016, Nitrome posted on Twitter that Gunbrick had been featured on the Apple App Store in a section titled "The Brit List", a list of apps made by British game developers[32].


Gunbrick was ranked #81 in the top paid iOS apps in the UK.[33]

Nitrome mentioned that the game sold favourably[34].


A three game bundle consisting of Gunbrick mobile, 8bit Doves, and Icebreaker: A Viking Voyage was offered on the Apple App Store on January 29 2015.[35]

Gunbrick was advertized among four other games on the Apple App Store under a section titled "Pay Once & Play", a section for games with no in app purchases.[36]

Starting February 25 2015 Gunbrick was put on sale in the Apple App Store as part of an App Store feature that put a selection of iOS games on sale[37], dropping in the US app store from US $2.99 to US $0.99. [38] Nitrome was offered to be a part of this sale by Apple.[39]

Gunbrick was listed in the "Innovative Games" section on the Apple App Store when this section was launched on March 13 2015.[40]

Again, in December 2015, the game was featured in the "15 Awesome Retro Games" section on the Apple App Store[41].


Achievement Description
Pack 1 Complete Complete 1st pack.
Pack 2 Complete Complete 2nd pack.
Pack 3 Complete Complete 3rd pack.
Pack 1 Flawless Complete all levels in 1st pack without dying.
Pack 2 Flawless Complete all levels in 2nd pack without dying.
Pack 3 Flawless Complete all levels in 3rd pack without dying.
Game Complete Finish the game.
Kebab Shoot 3 people in a row with the same bullet.
Flatland Squash 100 people with the Gunbrick.
Pancake Day Squash 30 robots.
Luddite Destroy 100 robots.


  • During development, the mobile version of Gunbrick was referred to as "Gunbrick SD", SD standing for "standard definition", poking fun at how the mobile version of Gunbrick is more detailed than the icon version.[42] Despite being used as an "in house joke", even after release it was still used on some official Gunbrick material to refer to the mobile game.
  • A ? Block and Brick Block from the Mario series appear in the room of the main character in the first level.

A part of the game's icon animated, as seen in the game's official trailer

  • Jon Annal provided voices for some of the characters in the game.[43]
  • Gunbrick was unintentionally released on January 7th, 2015, on Android.[2]
  • Gunbrick was accidentally made free on the Amazon App Store upon release, though this was soon rectified. [44]
  • If the player tries to the get the Gunbrick avatars but is not connected to the internet, they will be redirected to the page for where they can get Icebreaker avatars instead.
  • At 9 seconds in the game's trailer, an animated version of the game's icon is shown.
  • Spoiler
    In Magic Touch: Wizard for Hire, Gunbrick related characters appear in the Gunbrick background (pictured below), these character being the Gunbrick, a cat in a Kitty Cat Brick, and a bird.
  • In Cooped Up, Brickcola soda cans from Gunbrick appears as one of the two falling item hazards.


  1. As seen in the Google Play description.
  2. 2.0 2.1 2.2 2.3 Gunbrick - Android Apps on Google Play on the Wayback Machine (archived 8 Jan 15 )
  3. Game Developer's Blog - Nitrome: And the secret game is..., 20 Nov 14, retrieved 22 Nov 14.
  4. Though not named in the game, the name of the event is identified here: [1]
  5. Nitrome on Facebook: Hi Nitromians! We appreciate all of our fan...: @Ross Davis: Its not a speedy task developing IOS titles. But we are working on development of some awesome ones right now, so be excited., 31 May 2012, retrieved 16 Oct 2014.
  6. Game Developer's Blog - Nitrome: New iOS Pages!, 18 Jul 2012, retrieved 14 Oct 2014.
  7. Nitrome - iPhone Games on the Wayback Machine (archived 15 July 2012 )
  8. 8.0 8.1 8.2 Nitrome on Facebook: Hi Nitromians, We thought that we'd let you know... → Comment by Nitrome: Remember that we did not show off anything on Icebreaker before it was 80% complete and that [Top Secret] is only 20% complete., 15 Aug 2014, retrieved 14 Oct 2014.
  9. Nitrome - iPhone Games on the Wayback Machine (archived 18 August 2014 )
  10. Game Developer's Blog - Nitrome: 99% Done and BIG News Tomorrow!: There is also another reason however...something that has been going on behind the scenes since the beginning of [2013] ...a secret! [referring to the Icebreaker A Viking Voyage publishing offer Rovio made the following day] , 13 May 2013, retrieved 15 Oct 2014.
  11. Game Developer's Blog - Nitrome: More Nitrome Mobile!: When Rovio got involved as publisher of Icebreaker we needed more people on the team so [Top secret] was also put on hold while we finished it., 29 Dec 2013, retrieved 1 Nov 2014.
  12. Game Developer's Blog - Nitrome: More Nitrome Mobile!: When Rovio got involved as publisher of Icebreaker we needed more people on the team so [the top secret game] was also put on hold while we finished [Icebreaker A Viking Voyage] , 29 Dec 2014, retrieved 15 Oct 2014.
  13. Pocket Studio Profile: Nitrome: With a couple of updates to Icebreaker: A Viking Voyage in the works, alongside two further mobile projects (one of these being Gunbrick)..., 7 July 13, retrieved 1 Jan 15.
  14. Game Developer's Blog - Nitrome: Mobile Page Update comment, retrieved 8 November 2014.
  15. Game Developer's Blog - Nitrome: Nitrome Game Jam Webpage is Live!: Yes it's for another game were [sic] working on for [the top secret mobile game]. We really should update that percentage., 17 May 2014, retrieved 15 Oct 2014.
  16. Comment by Frostyflytrap: I see that you hinted the new Gunbrick look in the Kraken skin, sneaky eh. ;)

    Game Developer's Blog - Nitrome: And the secret game is... → comment by Nitrome: Yeah we thought the game would be finished sooner so we put a hint in the skin which we have done lots of times for upcoming games., 21 Nov 14, retrieved 22 Nov 14.
  17. Nitrome on Facebook: Hey Nitromians, It's been snowing here in...: The secret iOS game is still progressing well but we don't want to take away from any Icebreaker exposure so you will have to wait until after that's out before we reveal that!, 20 Jan 2013, retrieved 17 Oct 2014.
  18. Game Developer's Blog - Nitrome: Mobile Site Incoming!: [The top secret mobile game is] still rumoured and very secret...well let you know what it is when we're ready. We can't talk about everything were up to all at once :), 17 Sept 2014, retrieved 17 Oct 2014.
  19. Eirik Suhrke on Twitter: [2]: Back home and back to work. Trying to wrap up the music for an upcoming game by @Nitrome [this was before development of Platform Panic] , 17 Mar 14, retrieved 2 May 15.
  20. Touch Arcade forums: Universal Endless Doves (By Nitrome) → post by Nitrome: Final teaser for our next paid game goes live later this week. The games not too far off was already submitted to Apple :), 12 Nov 14, retrieved 12 Nov 14.

    In response to JCho133: This is cool, but I'm just waiting for them to do a reveal of there next big game, and post its third teaser trailer.
  21. 21.0 21.1 21.2 Game Developer's Blog - Nitrome: And the secret game is...: The game has already been submitted and even approved. We decided to hold off until after Christmas (we were going to launch sooner) to avoid the most compedative [sic] time of the year on the App Store., 21 Nov 14, retrieved 22 Nov 14.
  22. 22.0 22.1 Touch Arcade: 'Gunbrick' Officially Unveiled from 'Icebreaker' Developer Nitrome: They hope to have Gunbrick available in early January [2015] , ..., 21 Nov 14, retrieved 22 Nov 14.
  23. 23.0 23.1 Nitrome on Twitter: [3]: Got an a Android device and want Nitromes Gunbrick and 8bit Doves for free? Then check out Amazons new app:, 26 Aug 15, retrieved 31 Aug 15.
  24. LinkedIn: Giuseppe Longo → Projects: Gunbrick SD: In this new version of the game I worked on all the graphics and some gameplay/level design elements, trying to push in it a setting and a main character as the original product was lacking of this features., January 2015, retrieved 2 May 15.
  25. H[e]nk Farr: @Nitrome I've beaten all of Gunbrick and Icebreaker on mobile... Will either be recieving new levels?

    Game Developer's Blog - Nitrome: [4]: Its a possibility., 6 Feb 15, retrieved 6 Feb 15.
  26. 26.0 26.1 26.2 Marek Tóth: Gunbrick is my GOTY for iOS so far! Do you have plans for adding more levels? Thanks! :)

    Nitrome on Twitter: [5]: maybe...we would like to but we have a lot of things going on so its hard to commit., 8 Mar 15, retrieved 8 Mar 15.
  27. Game Developer's Blog - Nitrome: Gunbrick: Apple Editor's Choice! → comment by Nitrome: We tried and tried to get it to work but nothing seems to work within the framework it was made in. It's not made in Unity or Cocos like our other games., 9 Jan 15, retrieved 9 Jan 15.
  28. Nitrome on Twitter: [6]: we don't have any plans at the moment [for further Gunbrick mobile levels] ., 2 Apr 15, retrieved 2 Apr 15.
  29. Nitrome on Twitter: [7]: Ohh looky looky, Gunbrick has a lovely new backdrop on the @AppStore 💛💛💛 [8], 26 Mar 16, retrieved 26 Mar 16.
  30. Nitrome on Twitter: [9], 8 Jan 15, retrieved 8 Jan 15.
  31. ': The best iPhone and iPad games from January 2015, 2 Feb 15, retrieved 2 Feb 15.
  32. Nitrome on Twitter: [10]: #Gunbrick is featured on the @AppStore Brit list! #BestOfBritish #gamedev, 5 Apr 16, retrieved 19 Apr 16.
  33. Jonnathon Annal on Twitter: [11], 24 Jan 15, retrieved 24 Jan 15.
  34. Game Developer's Blog - Nitrome: Bomb Chicken - Steam! → Comment by Nitrome: Gunbrick did quite well..., 16 Jun 17, retrieved 27 Mar 17.
  35. Jonnathon Annal on Twitter: [12]: Oh looky looky. A bundle of @Nitrome Premium games at a reduced price on IOS #gunbrick #icebreaker. #8bitdoves, 29 Jan 15, retrieved 29 Jan 15.
  36. Jonnathan Annal on Twitter: [13], 14 Feb 15, retrieved 15 Feb 15.
  37. Jonnathan Annal on Twitter: [14], 26 Feb 15, retrieved 26 Feb 15.
  38. AppUnwrapper on Twitter: [15], 25 Feb 15, retrieved 25 Feb 15.
  39. Nitrome on Twitter: [16]: it's not a sale its an App Store feature which we kindly got asked to participate in by Apple., 26 Feb 15, retrieved 26 Feb 15.
  40. Touch Arcade: Apple "Innovative Games" Feature Has Mostly Paid Games, 13 Mar 15, retrieved 13 Mar 15.
  41. Game Developer's Blog - Nitrome: [17], 18 Dec 15, retrieved 18 Dec 15.
  42. Comment by adpr: hey nitrome, what does the small SD at the end of the word gunbrick mean?

    Game Developer's Blog - Nitrome: And the secret game is... → comment by Nitrome: Standard definition. A little in house joke. ;D, 20 Nov 14, retrieved 21 Nov 14.
  43. Jon Annal on Twitter: [18]: Hey most of the Vikings and Gunbrick voices are me., 7 Jan 14, retrieved 7 Jan 14.
  44. Game Developer's Blog - Nitrome: Gunbrick: OUT NOW! → comments:: Magnetbot: Actually Gunbrick was free around midnight last night... [on the Amazon App Store]

    Nitrome: It was a mistake..., 8 Jan 15, retrieved 8 Jan 15.
  45. Pocketgamer: Nitrome teases its next 'big' mobile game with cats, V-signs, and perfume, 10 Nov 14, retrieved 10 Nov 14.
  48. Game Developer's Blog - Nitrome: [19]: Gunbrick: a premium much larger game is coming out next Thursday 8th jan., 3 Jan 15, retrieved 3 Jan 15.