Practice your game-building skills with fun challenges! Debug broken games, optimize performance, and add cool features.
This platform game looks fun, but the jump button doesn't work! Can you find and fix the bug?
Players want to pause the game. Can you add that feature?
This game works great on computers, but not on phones! Add touch controls.
Players are complaining their high scores disappear when they refresh. Can you fix it?
This game is fun but runs too slowly. Can you make it smoother?
Install GB3A on your device for a better experience!