Metal wheels

are hazards in Canary. There are two types of, Manual, and Moving.

General Appearance
look like a cross, with ridged spikes on each spiked end. They are silver, and their tips are pointed. In the center is a small metal circle, which connects each end of the wheel.

General Game Information
will always block the player's way. They are generally easily avoided, but combined with other hazards and/or enemies, they can be hard to avoid. They nearly always come in groups, which strengthens the likelihood of them hitting the player. They will kill enemies in addition to the player, but enemies are usually placed in between the wheels so that they are still near the wheels, but out of their range.

Moving Wheels
Moving Wheels are the first type of. They will turn at a constant rate, whether the player is pushing them or not. Moving Wheels tend to try to push the player forward by their quick speed. Moving Wheels can not easily be affected by objects. Mines are able to slow them down a small amount, but the player's laser or other objects seem to not have an effect on them. They are first encountered in level 12.

Manual Wheels
Manual Wheels are the second type of metal wheel. They are stationary, unless the player fires a laser at it or pushes an object (such as a mine or a minecart) down it to send it spinning. They usually slow the player down rather than speeding up, because firing a laser at one will not send it spinning considerably. They first appear with Moving Wheels in level 12.

Hazards Canary