Single-player games like Interplanetary
Below are 12 single-player Steam games similar to Interplanetary, 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 Interplanetary page.
Ranked picks
- 1
ENDLESS™ Space - Definitive Edition
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy with Interplanetary.
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
Pandora: First Contact
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy with Interplanetary.
Pandora: First Contact is a science fiction 4X turn-based strategy game on a planetary scale. Our Earth has been exhausted and colonial attempts on other planetary bodies have been in vain. Finally, after decades of exploration, an interstellar probe has brought promise of a new world.
- 3
ENDLESS™ Legend
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy with Interplanetary.
ENDLESS™ Legend is a 4X turn-based fantasy strategy game by the creators of ENDLESS™ Space and Dungeon of the ENDLESS™. Control every aspect of your civilization as you struggle to save your homeworld Auriga. Create your own Legend!
- 4
Interplanetary: Enhanced Edition
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
In this turn-based strategic artillery game, players wage interplanetary wars by developing their home planets and firing massive barrages through the unpredictable gravity fields of the solar system.
- 5
Stars in Shadow
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
Stars in Shadow is a turn-based 4X strategy game and a vivid tribute to the genre classics. Compete with alien factions to explore and colonize nearby starsystems, build fleets to defend against rivals, negotiate or conquer them. Win by unifying the galaxy, through diplomacy or force.
- 6
Warhammer 40,000: Gladius - Relics of War
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy with Interplanetary.
Warhammer 40,000: Gladius – Relics of War brings you to a world of terror and violence. Four factions will engage in a brutal war for dominance over the planet’s resources. In the first turn-based 4X strategy game set in Warhammer 40,000 you will lead one of four unique factions.
- 7
The Last Federation
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.
- 8
Galactic Civilizations® II: Ultimate Edition
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!
- 9
Worbital
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
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!
- 10
DEFCON
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy and Indie with Interplanetary.
Inspired by the 1983 cult classic film, Wargames, DEFCON superbly evokes the tension, paranoia and suspicion of the Cold War era, playing on the fascinating aspects of psychological gameplay that occur during strategic nuclear warfare.
- 11
Risk
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Strategy with Interplanetary.
Draft! Attack! Fortify! Play the original game of strategy and world domination — now for your PC. Enjoy the classic look and fun of RISK in an exciting new interactive experience. Play two ways as you strategize over the map and set out to conquer the world.
- 12
Mushroom Crusher Extreme
Single-player alternative to Interplanetary — playable solo, no multiplayer required. Shares Indie with Interplanetary.
Mushroom Crusher Extreme is a retro-styled arcade-action game, that throws you right in the heart of a giant Shroom invasion. Fight off the vicious fungi with elemental magic and save the day, before it’s too late.