Single-player games like Cataclismo
Below are 19 single-player Steam games similar to Cataclismo, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Cataclismo page.
Ranked picks
- 1

Workers & Resources: Soviet Republic
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity.
- 2

Manor Lords
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
Manor Lords is a medieval strategy game featuring in-depth city building, large-scale tactical battles, and complex economic and social simulations. Rule your lands as a medieval lord – the seasons pass, the weather changes, and cities rise and fall.
- 3

Norland
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
Lead your noble family in this medieval colony sim, facing off against class conflict, religious struggle, and political treachery. Tend to your people’s needs, uncover the lost knowledge of a fallen empire, and engage in nefarious plots against your enemies.
- 4

Empires of the Undergrowth
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.
- 5

Old World
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
Old World is a revolutionary new historical strategy game where you lead your dynasty over generations of rule against rival kings and queens. Wage massive wars, manage your court, and build a dynasty — or watch your empire crumble to dust. What legacy will you leave behind?
- 6

Whiskerwood
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
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.
- 7

Sid Meier's Civilization VII
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
The award-winning strategy game franchise returns with a revolutionary new chapter. Sid Meier's Civilization® VII empowers you to build the greatest empire the world has ever known!
- 8

Heart of the Machine
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
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.
- 9

They Are Billions
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy with Cataclismo.
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?
- 10

SurrounDead
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
SurrounDead is an open world survival game. Taking place in a world ravaged by an apocalyptic catastrophe. The dead reign free and will stop at nothing to kill you.
- 11

SC2VN - The eSports Visual Novel
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Simulation with Cataclismo.
SC2VN is a visual novel about the South Korean StarCraft 2 scene. You play as Mach, a foreign semi-pro trying to make it in eSports who soon learns that success in StarCraft takes more than in-game strategy.
- 12

Total Annihilation
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy with Cataclismo.
What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.
- 13

Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.
- 14

Stronghold Crusader HD (2012)
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Strategy and Simulation with Cataclismo.
The highly anticipated sequel to the best-selling Stronghold, Stronghold Crusader HD throws you into historic battles and castle sieges from the Crusades with fiendish AI opponents, new units, 4 historical campaigns and over 100 unique skirmish missions.
- 15

Project Zomboid
Single-player alternative to Cataclismo — playable solo, no multiplayer required. Shares Simulation with Cataclismo.
Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite..
- 16

Valheim
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
A brutal exploration and survival game for 1-10 players, set in a procedurally-generated purgatory inspired by viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage!
- 17

Moonlighter
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
Moonlighter is an Action RPG with rogue-lite elements that demonstrates two sides of the coin – revealing everyday routines of Will, an adventurous shopkeeper that secretly dreams of becoming a hero.
- 18

The Mageseeker: A League of Legends Story™
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
From Digital Sun, creators of Moonlighter, The Mageseeker is an action RPG in the League of Legends universe. Play as Sylas, a mage now freed from years in captivity. Wield the chains that once bound you and liberate Demacia from the Mageseekers' tyranny.
- 19

Moonlighter 2: The Endless Vault
Single-player alternative to Cataclismo — playable solo, no multiplayer required.
Live the double life of a fearless adventurer and a crafty merchant! Dive into vibrant dimensions brimming with shiny loot and pesky enemies. Grow your shop, tinker with weapons and gadgets, as well as make your mark among a ragtag community of castaways.