GotGame reviews They Are Billions, the real-time strategy title from Numantian Games with a steampunk and zombie apocalypse theme.
You don't need to climb to a tall place to check out the best tower defense games of all time.
How many are there? Billions you say? Well count them again to be sure.
They Are Billions is a zombie-themed, survival RTS where you need to protect your town against waves of incoming zombie hordes. There may not actually be billions of them, but it's damn close. This survival guide will help you make it out alive.
