Single-player games like Astral Outpost
Below are 8 single-player Steam games similar to Astral Outpost, 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 Astral Outpost page.
Ranked picks
- 1
Fireworks Incremental
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
Bad Wizard covered the land with a Magical Dome and the only way to destroy it is with fireworks! Hire units, unlock buildings, buy upgrades, discover powerful synergies, turn a few tiny explosions into a ridiculous spectacle and ultimately defeat The Bad Wizard himself!
- 2
Aeons Odyssey
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
An idle management game where you craft equipment, found colonies, collect ships and manage an interstellar economy with fellow captains online. Your autopilot will do the tedious work of scanning planets, you focus on decisions. Includes an optional companion mode to keep track of your progress.
- 3
Singularity Simulator: Click Is All You Need
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
A clicker/incremental game where you run an AI development company and aim for the technological singularity. Click to write code, hire researchers, build data centers, and turn the galaxy into computing resources.
- 4
Desk Space: Idle Spacefleet clicker
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
Grow your fleet of spaceships in this incremental space game. Mine asteroids and trade with stations, unlock upgrades to make more money, deploy pirates, and unlock [REDACTED]. Pin to your desktop and watch your empire grow while you do "more important" things.
- 5
A Game About Getting Bigger
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Simulation and Casual with Astral Outpost.
A Game About Getting Bigger is a loot-driven incremental game about feeding a growing black hole. Destroy celestial bodies to make the black hole at the center grow larger and larger.
- 6
OIL.EXE
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
Drill the wells. Run the refinery. Read the market. OIL is a free text-based simulation of running a petroleum operation, played at a 1980s green-phosphor terminal. End each year richer or bankrupt. Mind the bear market. Climb the leaderboard.
- 7
Mars Clicker
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
Click crystals until they crack. Automate the grind. Reset everything on purpose for a permanent power spike. Mars Clicker is an idle clicker / incremental game where every prestige run makes the next one faster — and ACE will remind you it's for your own efficiency.
- 8
Mars Inc 98
Single-player alternative to Astral Outpost — playable solo, no multiplayer required. Shares Strategy and Simulation with Astral Outpost.
A retro Win98 styled incremental game about terraforming Mars. Manage power, build your systems, and clear the atmosphere to make the planet livable.