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

ENDLESS™ Space - Definitive Edition
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy with Star-Twine.
ENDLESS™ Space is a turn-based 4X strategy game, covering the space colonization age in the ENDLESS™ Universe, where you can control every aspect of your civilization as you strive for galactic domination.
- 2

DG2: Defense Grid 2
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
- 3

Stellar Warfare
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
- 4

Worbital
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
With the shifting gravity on your side, aim your cannons, blast your enemies and enjoy the fireworks. Worbital is a real-time strategic artillery game in space, peppered with a heavy dose of cosmic chaos. The goal: be the last civilization standing!
- 5

Sins of a Solar Empire®: Rebellion
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
- 6

Nexus 5X
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
- 7

Cosmoteer: Starship Architect & Commander
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy with Star-Twine.
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
- 8

Objects in Space
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Strategy and Indie with Star-Twine.
Objects in Space is a retro space game centred on 2D point-and-click stealth action in a massive open world. Players have their own customisable ships and can meet people, become a trader, bounty hunter, explorer, scavenger or all of them at once.
- 9

Spring Falls
Single-player alternative to Star-Twine — playable solo, no multiplayer required. Shares Indie with Star-Twine.
Spring Falls is a puzzle game about water, erosion, and watching things grow. Manipulate the landscape and bring wildflowers to life on a peaceful mountainside.