They Are Billions is described as 'Survival real-time strategy game where the player builds and defends a colony against swarms of zombies that threaten to destroy what is left of humanity. The game includes a series of campaign story missions, as well as randomly generated survival maps' and is a Survival Game in the games category. There are eight games similar to They Are Billions for Steam, Windows, Linux, itch.io and Mac. The best They Are Billions alternative is Darfall. It's not free, so if you're looking for a free alternative, you could try Védelem: The Golden Horde or Second Earth. Other They Are Billions like games are Age of Darkness, Reignfall, Diplomacy is Not an Option and Alien Marauder.
Darfall is a strategy survival city-builder with RPG elements. You lead your hero with a band of warriors to defend your settlement, explore the corrupted land and craft new items. Expand your settlement and defeat the darkness coming from everywhere.
A medieval Real Time Strategy and Survival game set in the 13th century. Build, expand and defend your lands against the deadliest Mongolian invasion ever witnessed.
Age of Darkness: Final Stand is a dark fantasy survival RTS where you must illuminate, build and defend humanity’s last bastion against hordes of Nightmares. Set in the remnants of a kingdom consumed by a deadly fog, you decide. Will you hide in the light?
Reignfall is a real-time strategy game set in a medieval fantasy world that has been invaded by an army of undead. As the lord and protector of your kingdom, you must build up your defenses and raise armies to stand against the invading hordes.
A a base-building game prototype by Free Lives. Expand your economy and fortify your defenses to survive a huge alien swarm.
An RTS game where hordes of thousands of enemies attack your castle and surrounding village. You must build walls and armies to defend against them by harvesting local resources and expanding your territory.
“Alien Marauder” is a real-time strategy game with survival and confrontation theme. In this game, you will be the leader to a treacherous alien planet, build and defend base to survive against the vaxan waves. Make the right decision!
From the Command & Conquer veterans at Petroglyph comes the first ever survival RTS set in the savage world of Conan the Barbarian. Play solo or team up in multiplayer in Conan Unconquered’s action-packed co-op Mode where you build a shared stronghold and fend off the hordes...
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