There are no instruction on what to do (avoid or collect) and which keys to use, and you've implemented some weird combination. The standard is arrow keys or WASD. The worm game uses Q and D for left and right. The others use SQZD (S is down while being above the Z key, and Z is up while being below the S key).
Apart from the bee game, there doesn't appear to be any goal for the games - just avoid for as long as possible.
However, I think with a bit of time you should be able create a polished game. Some sound and objectives (plus better key combinations) and you have a promising set of minigames.