Single-player games like Astro Protocol
Below are 8 single-player Steam games similar to Astro Protocol, 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 Astro Protocol page.
Ranked picks
- 1
DeckTerra
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
DeckTerra is a 4X strategy game built around cards. Explore procedurally generated maps, research new technologies, develop your settlements, and raise armies all while building a deck that complements your strategy.
- 2
Dwarf Guild Mania
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
Lead a campaign of glory as you mine, trade, spy, & sabotage your way to victory. Your guild of dwarves must vanquish its rivals and conquer the realm in this turn-based economic strategy game. Lead your capitalist dwarves across new lands in search of gems and gold. For the Guild!
- 3
ZEPHON
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
From the developers of Warhammer 40,000: Gladius, ZEPHON is a post-apocalyptic 4X strategy game built on Proxy’s unique tactical combat system. Guide survivors through a turbulent future, navigating unexpected disasters, eldritch horror and cyberpunk monstrosities. What will you do to survive?
- 4
Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.
- 5
Alliance of the Sacred Suns
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
Alliance of the Sacred Suns is a sci-fi grand-strategy RPG that begins with your coronation as the head of an interstellar Empire, and ends with your demise. Manage feuding noble houses and the schemes of would-be usurpers as you try to revive the glory of an Empire on the brink of collapse.
- 6
Galactic Civilizations III
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.
- 7
Sid Meier's Civilization VII
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
The award-winning strategy game franchise returns with a revolutionary new chapter. Sid Meier's Civilization® VII empowers you to build the greatest empire the world has ever known!
- 8
Warhammer 40,000: Gladius - Relics of War
Single-player alternative to Astro Protocol — playable solo, no multiplayer required. Shares Strategy with Astro Protocol.
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.