These days, I've started to study WebGL and its behavior on web browsers. One of my courses this semester is Introduction to Computer Graphics, and many little projects that I've done are avaliable on this website.
This last one is a little game that you can play in your browser (using the arrow keys) or mobile phone (Tilt the screen for moving and touch the screen for jump). In this game, the red block, which is you, should avoid the green blocks that will come in your direction. Use the UP arrow key of your keyboard or touch in the screen in your mobile device to jump with the red block. At the top of the screen, you will see some information such as your life bar (which is blue and decreases each time the red block hit a green block) and your score. The game fits in any orientation in your device (portrait oir landscape); however, sometimes you will need to refresh the page in order to get a better visualization of the game (landscape is much better than portrait).