This past week I've done significant progress on the Javascript coding for my game, tentatively called Bildpunkt (German for pixel). The theme of the game is pixels, and in this iteration, the game mechanic involves eating the "food pixels" littered across the browser window. The more of these you eat, the larger your character gets!
I ran into some issues with the collision detection (the math is a little off, as well as the point in which the collision is detected is not the center of the image or pixel, but the top left corner). I need to implement a workaround (i.e. getting the height and width of each image/pixel and dividing it by 2 to determine the center x,y location from which to detect collision).
I'm also considering using a library like Box2D, since it might be helpful down the road for a bunch of other game mechanics.
The code for this version can be hound here on Github.