Single-player games like SeaColony
Below are 8 single-player Steam games similar to SeaColony, 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 SeaColony page.
Ranked picks
- 1
My Drug Cartel
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
A drug plantation management game with basebuilding, strategy and combat elements. Expand your plantation, hire workers, and plan new smuggling routes. But be ready to face a heavy response by law enforcement by hiring guards, buying weapons and building defences.
- 2
Whiskerwood
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
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.
- 3
Nova Roma
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
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.
- 4
Here Comes The Swarm
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Indie with SeaColony.
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?
- 5
Ground of Aces
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
Take command of a remote military air base during World War II. Build your own airfield, manage iconic aircraft and oversee your crew’s well-being. Prepare them against air raids and send your pilots on dangerous missions. Survive and help your nation win the war!
- 6
Mars Attracts
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
Mars Attracts is a park management sim set in the iconic universe of Mars Attacks™. Play as the devious Martians as you construct detailed enclosures, manage staff, and most importantly - abduct and experiment on humans for the entertainment of your Martian guests!
- 7
Ascent of Ashes
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Indie with SeaColony.
A colony sim set in a post-apocalyptic dystopia. Build and defend your base. Manage your survivors. Engage raiders, aliens, Remnant soldiers and other factions in real-time-with-pause combat. Or use stealth to outwit them. Explore the massive world. Survive at all costs
- 8
STARIO: Haven Tower
Single-player alternative to SeaColony — playable solo, no multiplayer required. Shares Strategy and Simulation with SeaColony.
A vertical kingdom in the sky! Plan your ascent from the harsh Sand Zone, rising layer by layer as you and your Towertizens stand together against looming disasters. Build trade ports and vertical supply networks. Perform Rituals to shape miracles, and witness the prosperity of this rising nation.