It's written in c++ and SDL
I have implemented:
Player
Enemies
Map loading
Bullets
I think the next thing I'm going to give the zombies some level of intelligence (don't run into each other, collide with objects), and have them spawn off the viewable screen.
After that, maybe items. I want to work towards a survival horror feel.
Here is a picture demonstrating everything I've put in so far

Any feedback would be appreciated