I recently made a game for the web called Skwerm, a survivability game with an interesting twist (literally). Players control a worm in order to avoid flying objects. The longer you survive, the more points you get. Also, many different powerups will spawn that you can hover over to activate; however, they aren't all beneficial.
The URL is http://skwerm.net
I would really appreciate anyone spreading the word, playing it, sending me feedback, etc.