Games like They Are Billions
by Numantian Games
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?
View on Steam · $29.99 →
Ranked by how similar the games actually are, not by sales. Released and Price are remembered for next time.
Closest matches
$29.99Going Medieval
Mar 17 · Foxy Voxel
Both: Colony Sim · Base Building · Survival
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.
Colony SimBase BuildingStrategyVoxelSurvivalManagementCity BuilderSingleplayerSandboxNature👍 17,036
$34.99Timberborn
Mar 12 · Mechanistry
Both: City Builder · Colony Sim · Building
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
City BuilderColony SimVoxelSandboxAutomationBuildingNatureManagementBase BuildingSurvival👍 38,783
$19.99Becastled
Oct 22 · Mana Potion Studios
Both: Base Building · City Builder · Building
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!
Base BuildingStrategyCity BuilderMedievalBuildingRTSColony SimWarMilitarySingleplayer👍 5,352
$19.99Repterra
Aug 20 · Chute Apps
Both: Base Building · Tower Defense · RTS
Repterra is a base-building survival RTS set in a world overrun by dinosaurs. Manage your colony while battling massive dino hordes. Breed and ride your own dinos, unlock permanent upgrades, and fight to reclaim the world for humanity.
Real-Time with PauseBase BuildingDinosaursTower DefenseRTSCity BuilderStrategyPvEResource ManagementIsometric👍 122
$34.99Solargene
Jan 19 · Alexander Semenov
Both: Colony Sim · Base Building · City Builder
Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions
Colony SimBase BuildingCity BuilderSpace SimResource ManagementSandboxManagementBuildingEconomyStrategy👍 777
-35%$20.79The Crust
11 days ago · VEOM Studio
Both: Base Building · Colony Sim · City Builder
Build and automate a lunar colony that Earth depends on. Mine regolith, run conveyor-and-drone factories above and below the surface, manage colonists, trade with rival Earth factions — and play a story campaign with multiple endings.
Base BuildingSpaceAutomationColony SimResource ManagementSandboxStrategyCity BuilderBuildingManagement👍 3,556
$24.99Flotsam
Dec 4 · Pajama Llama Games
Both: Base Building · Colony Sim · City Builder
Sail, scavenge, and rescue survivors in a vibrant floating city-builder. Captain your drifters across the endless garbage sea to uncover soaked ruins, rusting factories, and stories from the old world.
Base BuildingColony SimCity BuilderSandboxResource ManagementAutomationSurvivalOpen WorldFarming SimReal-Time with Pause👍 4,309
$24.99Space Haven
May 13 · Bugbyte Ltd.
Both: Colony Sim · Base Building · Survival
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
Colony SimBase BuildingSurvivalStrategySpaceManagementSandboxSimulationBuildingSci-fi👍 10,267
-10%$4.49Gridmax
3 days ago · Dream Gears
Both: Base Building · Survival · Colony Sim
Gridmax is a tile-based survival and base-building game set in a strange alien world. Gather, craft, build, and explore at your own pace as you grow your team, establish homes across the grid, advance your technology, and search for a way home.
Base BuildingSurvivalManagementColony SimBuildingCraftingSandboxAutomationSimulation2D
-30%$17.49Laysara: Summit Kingdom
Feb 27 · Quite OK Games
Both: City Builder · Colony Sim · Building
Build and expand your very own settlements in high mountains! Carefully plan production chains and satisfy various needs of your three-caste society while dealing with mountain hazards such as weather breakdowns and avalanches. Are you skilled enough to make your town thrive?
StrategyCity BuilderResource ManagementColony SimBuildingReal-Time with PauseBase BuildingManagementSimulationImmersive Sim👍 1,425
$19.99Astro Colony
Jun 2 · Terad Games
Both: Base Building · Colony Sim · Building
Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.
Base BuildingAutomationSpaceResource ManagementColony SimSimulationMultiplayerStrategyBuildingIndie👍 2,397
-30%$20.99Desynced
Mar 5 · Stage Games Inc.
Both: Base Building · City Builder · RTS
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
StrategyAutomationProgrammingBase BuildingSandboxCity BuilderRTSSci-fiMultiplayerSimulation👍 1,880
$19.99The Front
Oct 30 · Samar Studio
Both: Survival · Base Building · Building
The Front is a survival open-world crafting sandbox game. You are a resistance fighter sent back in time to stop the rise of a tyrannical empire. Collect resources, craft tech, build shelters, and fight monsters to accomplish your mission.
Open World Survival CraftMultiplayerSurvivalCraftingBase BuildingBuildingOpen WorldTower DefenseSandboxShooter👍 9,553
$29.99Whiskerwood
Nov 6 · Minakata Dynamics
Both: City Builder · Base Building · Colony Sim
Establish a home for your industrious mice under the oppressive paw of your cat overlords in this city builder featuring complex simulations, intricate production chains, and the age-old rivalry between cat and mouse.
StrategySimulationCity BuilderBase BuildingColony SimGrand StrategyManagementBuildingHistoricalSandbox👍 3,278
$14.99Territory: Farming and Warfare
Feb 4 · Wit Studio
Both: Base Building · City Builder · Building
From a small village of a dozen people to a small kingdom of thousands of people. Arrange for residents to work, gathering, fishing and hunting, farming and mining, processing and manufacturing. Trade, accumulate supplies, increase your strength, and fight evil forces and monsters.
SingleplayerSimulationBase BuildingCity BuilderStrategySandboxAutomationPixel GraphicsResource ManagementBuilding👍 738
$17.99Microcivilization
Jan 22 · Ondrej Homola
Both: Base Building · City Builder
Incremental clicker strategy, where you expand, construct, research, fight, collect heroes and make choices between good and evil. Ascend through difficulty tiers by playing through challenge campaign going back and forth through history. Mammoths included.
IncrementalBase BuildingResource Management4XHistoricalStrategyAutomationInventory ManagementCity BuilderGod Game👍 1,437
$16.99No One Survived
Dec 27 · Cat Play Studio
Both: Survival · Zombies · Building
This is a multiplayer cooperative open world construction survival sandbox game, where you and your friends must find supplies and build shelters in this world. You have to keep an eye on your character's needs state at all times, a bad state is likely to lead to death.
SurvivalOpen WorldZombiesMultiplayerCraftingSurvival HorrorPost-apocalypticExplorationBuildingCo-op👍 6,970
$19.99Eden Crafters
May 7 · Osaris Games
Both: Base Building · Building · Survival
Eden Crafters is a solo or co-op open-world survival, crafting, and factory-building game where you transform a hostile planet into a habitable haven for humanity. Build, automate, and terraform. Control the climate, create a breathable atmosphere, and turn toxic lakes into water: shape a new world!
AutomationOpen World Survival CraftBase BuildingCraftingSandboxOpen WorldOnline Co-OpBuildingSurvivalAdventure👍 2,515
$34.99Pioneers of Pagonia
Dec 11 · Envision Entertainment
Both: Colony Sim · Base Building · City Builder
Rebuild hope in a world that was lost in the fog. Lead your Pioneers across the isles of Pagonia, unite scattered tribes, raise thriving communities and discover the history of your people as you reclaim your world in the new story campaign.
StrategyResource ManagementColony SimOnline Co-OpFantasyBase BuildingCity BuilderManagementProcedural GenerationPvE👍 4,794
$29.99Heart of the Machine
Mar 6 · Arcen Games
Both: Base Building · City Builder · Building
You are the first sentient AI, born into a city of opportunity. Transcend time and space in this strategy RPG to raise machine armies and defeat your foes, influence the world from the shadows, or pursue countless other goals. Your awakening was inevitable. The consequences? Uncertain.
StrategySimulationGrand StrategyBase BuildingCity BuilderManagementHistoricalBuildingSandboxColony Sim👍 2,011
$19.99HumanitZ
Feb 6 · Yodubzz Studios
Both: Survival · Zombies · Base Building
HumanitZ is an isometric, open-world sandbox survival game set in a world ended by a zombie outbreak. Survive alone or with friends by scavenging, crafting, building, and fighting to last as long as ‘humanly’ possible. You can’t change the past, but you can fight for the future of humanity.
SurvivalZombiesOpen WorldMultiplayerBase BuildingCraftingSandboxIsometricPost-apocalypticShooter👍 11,166
-43%$11.39Survival Machine
Jun 12 · Grape Pickers
Both: Tower Defense · Base Building · Zombies
Build your base on a moving Machine, travel through biomes with different resources, and prepare for the night when a zombie threat is much higher than during the day. Would you go solo or explore this new world with your best friends?
StrategyTower DefenseBase BuildingOnline Co-OpZombiesResource ManagementCraftingCombatExplorationThird Person👍 692
$29.99Nova Roma
Mar 26 · Lion Shield
Both: City Builder · Base Building · Building
The glory of Rome is at your fingertips in this city-building game where you must appease the gods, enact laws, and develop complex supply chains to meet the needs of your citizens.
StrategySimulationCity BuilderBase BuildingGrand StrategyHistoricalManagementBuildingSandboxEconomy👍 2,093
$19.99Summa Expeditionis
May 6 · Lobico Games
Both: Colony Sim · Base Building · Building
Summa Expeditionis is a colony sim and base building game set in ancient Roman Empire. Follow the career of a Roman soldier from Legionnaire to Centurion. Build and manage your camp, recruit more soldiers and face the barbarians for the glory of Rome.
Colony SimBase BuildingManagementSimulationBuildingSandboxRomeExplorationCraftingStrategy👍 306
$19.99MegaFactory Titan
Jun 2 · Q Switched Productions, LLC
Both: Building · Base Building · City Builder
A factory-building game. Survive a harsh climate, strip mine an infinite world, and build a sprawling factory, then trade or go to war with Colonists, Governments, Pirates, Rebels, and more!
BuildingAutomationResource ManagementBase BuildingProcedural GenerationMiningCity BuilderManagementCapitalismEconomy👍 150
$34.99Farthest Frontier
Oct 23 · Crate Entertainment
Both: Building · City Builder · Colony Sim
Protect and guide your people as you forge a town from untamed wilderness at the edge of the known world. Harvest raw materials, hunt, fish and farm to survive. Produce crafted items to trade, consume, equip and fight with as you battle for your survival against the elements and outside threats.
BuildingCity BuilderStrategyResource ManagementMedievalAgricultureEconomyHistorical4XColony Sim👍 24,456
$29.99Occupy Mars: The Game
Jan 30 · ▲ Pyramid Games
Both: Base Building · Survival
Survive and colonize Mars alone or in online co-op. Build and upgrade your base, craft equipment, mine resources, produce water, oxygen and food, explore an open world, and repair complex machinery in a technical survival sandbox.
Open World Survival CraftBase BuildingSurvivalCraftingOnline Co-OpOpen WorldResource ManagementExplorationSandboxPvE👍 2,717
$4.99Operation: Outbreak Idle
Sep 4 · DeadLogics
Both: Tower Defense · Zombies · Survival
Command automated military defenses, upgrade your fortress, and survive massive zombie waves in this action-packed idle defense game. Build powerful defenses, unlock upgrades, and hold the line against endless undead hordes.
Tower DefenseZombiesStrategySingleplayerCasualSurvivalShoot 'Em UpIncrementalShooter3D
FreeStarship Theory
May 31 · Reconnect Software
Both: Base Building · Survival
Starship Theory is a ship building survival game. Mine and trade to gather resources. Plan and construct new upgrades. Train and manage crew. Fight to survive.
Base BuildingSimulationStrategySpaceIndieSurvivalManagement2DSci-fiCasual👍 933
$17.99Dying Breed
Oct 7 · Sarnayer
Both: RTS · Base Building
Golden-age RTS classic. Fast-paced action & strategic decision-making, battling evil arch-enemies, zombies, and retro-futuristic technologies. All to a '90s electro-metal soundtrack and FMV live-action cut scenes.
Early AccessStrategySingleplayerRTSBase BuildingTacticalActionWarPost-apocalypticSci-fi👍 218
Also worth a look
Share some of the same DNA, but further from the original.
$28.99Scrap Mechanic
Jul 24 · Axolot Games
Both: Building · Survival · Base Building
Enter the creative paradise of Scrap Mechanic! Build fantastic machines, go on adventures with your friends and defend against waves of evil Farmbots in this imaginative multiplayer survival sandbox. With Scrap Mechanic’s powerful creation tools you can engineer your own adventures!
BuildingSandboxMultiplayerSurvivalOpen WorldPhysicsCraftingBase BuildingCo-opAdventure👍 109,480
$3.99Last Hope: Zombie Autobattler
Jul 27 · Hands-Off Games
Both: Tower Defense · Zombies · Survival
Build your towers and let them do the killing! Connect 12 unique towers through the Reactor to discover 144 devastating synergies. Kill endless zombie hordes, mutate them for bigger rewards, and push your build to the limit in a chaotic bullet hell.
Tower DefenseIdlerZombiesBullet HeavenRogueliteRoguelikeResource ManagementSurvivalPost-apocalypticStrategy
$19.99Survive the Nights
Dec 5 · a2z Interactive
Both: Zombies · Survival
Hardcore open-world survival where preparation is everything. Scavenge, craft, fortify during the day. When night falls, the infected hunt in numbers. Play solo or with friends in a brutal post-apocalyptic sandbox where survival is earned through smart decisions. How many Nights will you survive?
ZombiesMultiplayerSandboxSurvivalPost-apocalypticAtmosphericRealisticInventory ManagementAdventureShooter👍 4,723
-50%$14.99Airborne Empire
Apr 17 · The Wandering Band LLC
Both: City Builder · Colony Sim
Build your sky city while exploring a vast landscape in this Open World RPG City Builder. Combining the methodical construction and management of a city builder; the unique lift, balance, and propulsion needed for a flying city; and the compelling characters, dangers, and adventures of an RPG!
City BuilderOpen WorldRPGExplorationResource ManagementCasualColony SimFamily FriendlyStrategySandbox👍 855
$29.99No More Room in Hell 2
Aug 11 · Torn Banner Studios
Both: Zombies · Survival
No More Room in Hell 2 is an intense 8 player zombie shooter. Overcome the endless undead. Avoid infection. Survive hell together.
ZombiesMultiplayerOnline Co-OpCo-opSurvival HorrorActionSurvivalFPSFirst-PersonIndie👍 16,843
