Check out this video demonstration of Tower of Guns, one of the coolest surprises at the Indiecade booth during E3.
The roguelike FPS is the work of one man, ex-38 Studios developer Joe Mirabello. After 38 imploded, Mirabello decided to pursue his own personal project, and Tower of Guns was born. In this video, he gives us a look at how the game will work, from guns as character classes to randomization.
You can find out more at Towerofguns.com, and if you pre-order the game you'll get a playable copy of the early version he was playing at E3.
And here's the trailer Mirabello put together for PAX: