They Are Billions is a cult-hit zombie apocalypse RTS set in a steampunk future, where humanity clings to a bleak existence in a dark world plagued by, quite literally, billions of zombies. The game is a success story on Steam, enjoying a large following and plenty of free updates, including a sizeable campaign mode which recently hit the PC version.

As a strategy game with fairly complex gameplay, it remains to be seen how well the game translates over to regular gamepad controls. If you don't fancy playing that type of game with a controller, thankfully, They Are Billions will also support mouse and keyboards on Xbox One.

In They Are Billions, your aim is to simply survive for as long as possible on a variety of map styles with plenty of modifiers. The campaign mode brings a dash of story into the mix, allowing you to get acquainted with some of the game's lore and characters, as you progress your way through a vast tech tree of research and upgrades.

As you progress through each game, the hordes will become increasingly ravenous, sending larger waves to attack while throwing in more powerful mutants into the mix. Your base can evolve too, getting more powerful units, stronger defenses, and more efficient resource gathering.

They Are Billions is a viciously addictive strategy game, and something of a personal favorite. Look out for our Xbox One version review in the near future, ahead of the game's launch on July 5, 2019.

Zombie apocalypse simulator

They Are Billions

Battle the Billions

Surviving increasingly difficult waves of mutant undead, in this unique and addictive zombie apocalypse strategy game.

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