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?

★ NIGHT IS COMING ★ HERE COMES THE SWARM ★ AFTER LONG NIGHT ★ DIPLOMACY IS NOT AN OPTION: SHAREWARE ★ BECASTLED ★ PHOENIX HOPE ★ GOING MEDIEVAL ★ DARKSWITCH ★ FROM GLORY TO GOO ★ RISEN KINGDOM ★ SURVIVING THE ABYSS ★ PLANETBASE ★ WE ♥ IT 
2

Here Comes The Swarm

85% 👍 OF 369
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?

3

After Long Night

76% 👍 OF 464
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.

4

Diplomacy is Not an Option: Shareware

92% 👍 OF 826
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.

Player reviews say 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 →
5

Becastled

82% 👍 OF 5.6K
About This Game

Build a castle by day and defend it by night. Becastled blends cozy city-building with challenging tower defense strategy. Lead the Sun Kingdom’s last stand against the Moon Beasts and end the ancient conflict between light and darkness!

Player reviews say you can…

  • …Build Before Sunset
  • …Hold Night Sieges
  • …Arm Castle Battlements
7

Going Medieval

89% 👍 OF 21K
About This Game

Build and manage your own castle settlement in a land reclaimed by wilderness. With detailed management, survival strategy, and a moddable sandbox world, Going Medieval challenges you to build the mightiest colony this side of the apocalypse.

Player reviews say you can…

  • …Raise Multi-Storey Castles
  • …Carve Underground Cellars
  • …Shape Terrain and Water
8

DarkSwitch

78% 👍 OF 785
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!

Player reviews say you can…

  • …Build a Tree City
  • …Light the Fog
  • …Connect City Layers
9

From Glory To Goo

96% 👍 OF 1.8K
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.

Player reviews say 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.
11

Surviving the Abyss

65% 👍 OF 1.1K
About This Game

Earth, 1976. You have been tasked with managing a deep-sea science facility working to perfect cloning. Explore the darkness and keep your crew alive in this hardcore survival colony builder. And beware. The darkness hides untold horrors.

Player reviews say you can…

  • …Hold Back the Darkness
  • …Engineer Better Clones
  • …Explore by Submarine
12

Planetbase

80% 👍 OF 10K
About This Game

Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.

Player reviews say you can…

  • …Balance Life Support
  • …Grow Hydroponic Food
  • …Build Production Chains