Test Subject Green

 is a puzzle-platform game released May 10, 2011. The game is a sequel to Test Subject Blue released on March 2nd of the same year. Gameplay is similar to its predecessor, except Xeno Industries is attacked by Doctor Nastidious, who manages to escape with the scientist's enzyme, Blue.

Controls
left right Left and right arrow keys - Move

up Up arrow key - Jump

down Down Arrow Duck

Space Bar - Fire enzyme bullet

Levels
Test Subject Green has 30 levels, 10 more than its predecessor. 5 are set in the Professor's lab at Xeno Industries, while 25 are set in Doctor Nastidious|Dr. Nastidious' Lab.

Enemies

 * Crawling Green Enzymes - Green Enzymes which crawl on the ground.
 * Monkey Green Enzymes - Green Enzymes that have the ability to propel themselves up and move on the ceiling.
 * Mimic Green Enzymes - Green Enzymes that change their appearance from a blob to something that looks like blue, but it also copies its movements except from standing still, but when Blue fires, some time later it fires in the same place it did, so watch out for it.

Hazards

 * Mines (Test Subject Blue) - Mines explode on contact.
 * Lasers (Test Subject Blue) - Lasers kill the player if the beam is touched.

Previews
Nitrome has said that the game went into production right after Test Subject Blue. From the trailer released on April 20, 2011, Blue is the hero and Green Enzymes are the enemy. A sequel is currently on development, currently unofficially known as Test Subject Green Sequel.

April 7
On April 7th, Nitrome released the below image in a blog post telling fans that Test Subject Green was in development.

April 20
Nitrome released a 58 second Trailer of Test Subject Green, revealing new features, the storyline, and enemies. -WKrFcHwLbY

Trivia

 * This game, and the other game in the series, are probably both influenced by the Portal series of games.
 * In the preload for the game, a green enzyme (possibly Green) is dreaming of beating Blue with a rolling pin.