Been a while since I worked on this. Here's version 0.2, newer and hopefully improved

Instructions:
-Left and right arrow keys to move
-Things (squares) will fall from the sky
-If they touch your character, you will collect them and increase your score
-Invisible walls will prevent objects from flying off the sides of the screen
-Score enough points and the background colour and music will change and a new type of thing will start to fall