Synaesthete

Synaesthete is an interesting mix of genres. It is part shooter and part rhythm. Imagine playing Geometry Wars but instead of pointing where you want to shoot, you have to press buttons to match the rhythm much like Dance Dance Revolution. If you are interested in trying it out, it can be downloaded for free here. Synaesthete is a finalist for the Independant Games Festival so be sure to vote for it if you like it.