Single-player games like Outlive 25
Below are 8 single-player Steam games similar to Outlive 25, 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 Outlive 25 page.
Ranked picks
- 1

Stronghold Crusader: Definitive Edition
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
Gird your loins and sharpen your steel! Besiege 20 unique enemy lords and battle friends online, in this expanded remaster of the classic 'castle sim'. Relive history with new units, opponents, visuals, audio, campaigns, skirmish trails, co-op and larger maps.
- 2

The Wuslers
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
Build a cozy settlement and economy where little Wuslers carry every single good on foot along the roads you lay out. Feed your mines, expand your territory with barracks and play solo, against the AI or with up to eight players on PC and Android.
- 3

TimbrianGuard
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
Satus (Latin for beginning/sowing) is a voxel-based sand box colony management sim. Players will be tasked with overseeing their colony as they fight for survival while expanding their colony's influence, creating new outposts, and attracting new colonists in the process.
- 4

Age of Bricks
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
A real-time strategy multiplayer classic. Build your base brick by brick, then raise an army against your friends online. Or save your friendship and team up together to defeat a hard army.
- 5

Solar Kingdoms: Human Survival
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Action and Strategy with Outlive 25.
Solar Kingdoms is a real-time strategy game where you command forces across solar systems, engaging in large battles both in space and on the surfaces planets. Establish colonies, find resources and artifacts, and fight up to 8 factions in skirmish, large campaign, missions, and multiplayer.
- 6

Stellar Shipyard
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
Stellar Shipyard is a space colony sandbox where you design modular ships and stations, and automate resource production using drones and workers. Let the automated systems fly even the most improvised designs. Face rival factions and threats solo, or alongside friends as allies or rivals.
- 7

FerroFrame
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Action and Strategy with Outlive 25.
FerroFrame is a real-time strategy ecology simulator — dig, dam, redirect and blast industry into high gear, then survive the world as the balance tilts in either direction. Use gigantic mechs called frames to terraform the planet to your needs and replenish your world with asteroids!
- 8

Riftborne
Single-player alternative to Outlive 25 — playable solo, no multiplayer required. Shares Strategy and Simulation with Outlive 25.
Riftborne is a classic terminal based, real time, grand strategy game. Construct space ships. Take part in factional warfare. Hire galactic hit-men on your rivals. Raid neighbors for rare resources. Train spies to infiltrate enemy bases for key intel. Grow your empire to dominate the galaxy.