Single-player games like Vanguard Galaxy
Below are 9 single-player Steam games similar to Vanguard Galaxy, 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 Vanguard Galaxy page.
Ranked picks
- 1

Inspiral: Echoes of Gravity
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Vanguard Galaxy.
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
- 2

Aeons Odyssey
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Vanguard Galaxy.
An idle management game about discovering planets, building colonies, crafting equipment, collecting ships, growing an interstellar economy and joining fellow captains online. Includes an optional companion mode to keep track of your progress.
- 3

Weird Wormholes
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Indie and Casual with Vanguard Galaxy.
Weird Wormholes is a casual game about traveling through wormholes to try and get back home. Use your ship to mine planets for resources and process these resources into components to enable your travels.
- 4

Periapsis: Gravity Slingshot
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Vanguard Galaxy.
Lead humanity’s final journey beyond Earth. Launch ships, harness gravity slingshots, and explore distant star systems to make humanity multi-planetary.
- 5

Above Earth
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Vanguard Galaxy.
Above Earth is a science fiction survival game. Experience a struggle for life in the fragile artificial environment of a damaged space station.
- 6

Bouncekraft
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy with Vanguard Galaxy.
A physics-driven automation game where your workers bounce between buildings like pinballs. Design bounce paths, build production chains, and survive asteroid waves.
- 7

Singularity Drift
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Indie and Casual with Vanguard Galaxy.
Feed a hungry black hole. Haul debris into the void, devour whole biomes, then collapse everything in a Singularity to grow stronger forever. A cosmic idle game about gravity, greed, and infinite prestige.
- 8

Desk Space: Idle Spacefleet clicker
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Vanguard Galaxy.
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.
- 9

Elite Dangerous
Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Vanguard Galaxy.
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.