Single-player games like Here Comes The Swarm
Below are 11 single-player Steam games similar to Here Comes The Swarm, 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 Here Comes The Swarm page.
Ranked picks
- 1

Calyx
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Early Access with Here Comes The Swarm.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 2

Clanfolk
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
Clanfolk is a colony sim set in the Scottish Highlands. Harness your environment to survive - fish, gather, hunt, and farm as you prepare for the winter. Build an inn, trade with other clans, have children and marry them off - live life and prosper across the generations.
- 3

They Are Billions
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy with Here Comes The Swarm.
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?
- 4

Whiskerwood
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
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.
- 5

Nova Roma
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
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.
- 6

Against the Storm
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
- 7

Corsair Cove
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
Build a sprawling pirate haven, raise a fleet to explore the high seas, and take on the Crown to keep the Age of Piracy alive! From ale to flintlock pistols, and from scallywags to swashbucklers, you’ll need to manage complex production chains and govern a rowdy crew to reign supreme over the seas!
- 8

From Glory To Goo
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Simulation with Here Comes The Swarm.
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.
- 9

Slay the Spire
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Indie with Here Comes The Swarm.
We fused card games and roguelikes together to make the best single player deckbuilder we could. Craft a unique deck, encounter bizarre creatures, discover relics of immense power, and Slay the Spire!
- 10

Diplomacy is Not an Option
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Strategy and Indie with Here Comes The Swarm.
Diplomacy is Not an Option is a strategy game set in a medieval fantasy world. Build your town and defenses, raise huge armies and fight against massive hordes of enemies. How long can you survive?
- 11

Dead of Darkness
Single-player alternative to Here Comes The Swarm — playable solo, no multiplayer required. Shares Indie with Here Comes The Swarm.
Dead of Darkness is a 2D survival-horror action-adventure. Investigate a mysterious island and unravel its disturbing secret. You’ll have to face grotesque creatures, hurdle deadly traps, solve puzzles, and most importantly, survive.