Games Like They Are Billions

They Are Billions

They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?

★ CATACLISMO ★ FINAL OUTPOST: DEFINITIVE EDITION ★ NIGHT IS COMING ★ HERE COMES THE SWARM ★ AFTER LONG NIGHT ★ DIPLOMACY IS NOT AN OPTION: SHAREWARE ★ BECASTLED ★ BUOYANCY ★ DARKSWITCH ★ ZOMBIE CURE LAB ★ FROM GLORY TO GOO ★ RISEN KINGDOM ★ WE ♥ IT 
1

Cataclismo

89% 👍 OF 4.2K
About This Game

Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.

2

Final Outpost: Definitive Edition

78% 👍 OF 199
About This Game

Final Outpost is a survival strategy base-builder. You lead the last survivors of the apocalypse. Assign roles, craft tools, and manage resources carefully. Construct buildings, level up your citizens, and fortify your town against hordes of zombies. How many days can you survive?

4

Here Comes The Swarm

86% 👍 OF 300
About This Game

Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?

5

After Long Night

77% 👍 OF 451
About This Game

After Long Night is a sandbox survival RTS. Build and fortify your base, scavenge every corner for vital resources, craft deadly weapons, and raise a militia to fight off relentless zombie hordes that strike every night. In this world, scavenging isn't just survival—it's strategy, power and war.

6

Diplomacy is Not an Option: Shareware

92% 👍 OF 735
About This Game

Diplomacy is Not an Option: Shareware is a free prequel to the original game. In a medieval fantasy world, you are to build settlements, raise huge armies, and defend against massive hordes of enemies. Learn how Ironbrow clan shaped the world's map the first time - if you survive, that is.

In this game, you can…

  • …face 25,000 enemies hitting your castle walls at once.
  • …freeze time mid-siege to breathe, reposition, and issue orders before unpausing into the chaos again.
  • …harvest soul crystals from the dead, build magical monuments, then fire beam spells and summon Dark Knights to clean up survivors.
REL Apr 30, 2025 FREE ON STEAM See This Game →
8

Buoyancy

55% 👍 OF 828
About This Game

Buoyancy is a city-building strategy game where you build, manage, and move a floating city on an oceanic world. Explore and scavenge resources scattered around the endless waters. Keep your villagers nourished and happy while combating fires, sickness, and pirate attacks.

9

DarkSwitch

78% 👍 OF 653
About This Game

DarkSwitch is a vertical survival city builder. Build a city on a great tree and defend it against the Fog. Face the challenges of limited real estate, scarce resources, and tough moral choices as you seek to uncover the mystery of the Shroud. The Tree Provides! The Tree Protects! The Tree Prevails!

11

From Glory To Goo

97% 👍 OF 1.7K
About This Game

From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.

In this game, you can…

  • …press one button to auto-rebuild every destroyed structure at a discount, using a hologram that marks exactly where everything used to be.
  • …retrofit your colony ship mid-run into cannons, factories, labs, and drop pods that send troops down to the map.
  • …play a Warlord captain who hijacks the normal faction and brings his own unique roster of units.