Extinction is a competition between two teams for the future of the planet.  The dinosaurs are fewer in number, but are incredibly powerful.  The cavemen must work together, using their greater numbers and superior intellegence if they wish to survive.

Psiborg was my first Guildhall game project: a high speed 2D maze.  I implemented a per-pixel lighting model in software, which forced me to run at a low resolution.  It ended up being really fun to play.  Maybe someday I'll port it to a handheld platform.