Single-player games like Stelvyr: Colony Defense
Below are 8 single-player Steam games similar to Stelvyr: Colony Defense, 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 Stelvyr: Colony Defense page.
Ranked picks
- 1
Exone Rift
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Stelvyr: Colony Defense.
Take direct control of your hero on a hostile planet. Build your base, gather resources, expand your territory your way, and survive against the planet’s deadly wildlife.
- 2
TechGuardian: Territory Defense
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Stelvyr: Colony Defense.
This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.
- 3
Stronghold: Definitive Edition
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Simulation with Stelvyr: Colony Defense.
Greetings sire! Your stronghold awaits you. Build a castle economy, besiege unforgettable villains and return to the 'castle sim' that started it all. Experience this classic RTS with upgraded visuals, modernised gameplay, Steam multiplayer and a new campaign.
- 4
Here Comes The Swarm
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Stelvyr: Colony Defense.
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
Calyx
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy with Stelvyr: Colony Defense.
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?
- 6
CARNAGE OFFERING Tower Defense
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Stelvyr: Colony Defense.
The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!
- 7
Cliff Empire
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Stelvyr: Colony Defense.
After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!
- 8
Stronghold HD (2012)
Single-player alternative to Stelvyr: Colony Defense — playable solo, no multiplayer required. Shares Strategy and Simulation with Stelvyr: Colony Defense.
The original castle sim, Stronghold HD allows you to design, build and destroy historical castles. Engage in medieval warfare against the AI in one of two single player campaigns or online with up to 8 players.