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.
Quite a fun game ... there should be more Options like Hardness Easy-Med-Hard and i didnt learn anything from the tutorial but may im not made for kinda games like this :P