Deadbuild is a RTS Tower Defence game. Your objective is to defend your village against waves of zombies. They spawn at night so you have time to (macro) gather resources and build defences at day. And when the night comes you can micro your hero and try to keep your village protected from enemies.
Fun game, needs some adjustment though. Even on on lowest difficulty, it took a couple tries to get past the first level. I'd say more time between waves, or faster gathering speed. Plus, a warning that zombies will be coming from different directions than the obvious one.