Robot Wants Kitty
This is a retro-style platformer game where you're a robot who needs to get to a kitten. You'll need to pass through numerous obstacles to get there. When you start you can do absolutely nothing, but move left and right.
As you collect power-ups you learn to do things such as jumping, shooting and much, much more. The key combination needed to use your new abilities will appear on the screen when you collect the power-up.