There are billions of reasons why you should play this game if you haven't just yet.
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.
Just about to dive into this game today on PS4, glad to see someone has given it a decent review!