Single-player games like Project Tomorrow
Below are 9 single-player Steam games similar to Project Tomorrow, 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 Project Tomorrow page.
Ranked picks
- 1
Copacetic
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
The 3D Pipes screensaver, but a resource management game, inside of a cube, about genocide. Place factories and modules around the walls of your mind, avoiding tangles as you wire them all together. Travel across the galaxy harvesting all sentient life. Space is limited, and the only enemy is you.
- 2
Diseased
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
Build your camp in the freezing cold and make tough choices. Capture walls to widen borders and send your men to explore. Risk it all for vital resources, as surviving the relentless waves of the Diseased emerging from the dark will be harder than you think.
- 3
Here Comes The Swarm
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
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?
- 4
AETHUS
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
Explore a vast underground world to mine and craft hundreds of items while building up your modular Outpost on the surface, to prospect for gems, refine resources and farm hydroponic crops in this top-down sci-fi survival-crafter where the story always provides a reason to dig deeper.
- 5
Blossom: The Seed of Life
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required.
Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems. Create life and make it thrive with your own hands.
- 6
Whiskerwood
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
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
Nova Roma
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
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.
- 8
The Riftbreaker
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required. Shares Strategy with Project Tomorrow.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 9
Night Stones
Single-player alternative to Project Tomorrow — playable solo, no multiplayer required.
You awake in Mythica, a cozy island where magical stones change day to night. Explore winding paths or venture into the wilds with your trusty glider and sailboat. To return home, you must befriend quirky townsfolk, discover hidden treasures, master magic, and face enemies in clever puzzle combat.