Single-player games like Explore the Universe 2175
Below are 8 single-player Steam games similar to Explore the Universe 2175, 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 Explore the Universe 2175 page.
Ranked picks
- 1
Ironfront Express
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Action and Strategy with Explore the Universe 2175.
Upgrade your engine’s arsenal in this bullet hell, tower defense roguelite featuring the most heavily armored locomotive in existence. Engineer and command the Ironfront Express in a unique take on lane defense where you upgrade with specialized turrets, drones, and tactical abilities.
- 2
Fortified Space
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Action and Strategy with Explore the Universe 2175.
Seize control of hostile planets in this nostalgic space sim and tower defense hybrid inspired by classic Flash games. Fight for orbital supremacy in starship combat, then land on the surface to build bases, deploy defenses, and shred enemies. Relax aboard your ship with farming, mining, and more.
- 3
Spacefleet: Heat Death
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Strategy and RPG with Explore the Universe 2175.
In the 23rd century, Earth orbit is flooded with debris from constant warfare. Countries, megacorporations, and mercenaries are fighting for control. Take contracts, build your warfleets, and dominate the Earth-Luna system in this realism-focused strategy RPG!
- 4
Sins of a Solar Empire II
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Strategy with Explore the Universe 2175.
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
- 5
Aliens: Dark Descent
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Action and Strategy with Explore the Universe 2175.
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.
- 6
The Scouring
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Action and Strategy with Explore the Universe 2175.
The Scouring is an RTS with fast pace, high attention to detail and next generation experience. Lead humans or orcs in a Classic Mode or use one of powerful Heroes to fight for victory! Play alone or with friends. Use our modding tools to create maps and custom game modes! Join The Scouring!
- 7
Star Vortex
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Action and RPG with Explore the Universe 2175.
Star Vortex is a fast paced Action-RPG inspired by classics of the genre. Design your ship, fight your way through hostile alien sectors, upgrade as you salvage rare weapons and experiment with different builds until nothing can stand against you.
- 8
Homeworld 3
Single-player alternative to Explore the Universe 2175 — playable solo, no multiplayer required. Shares Strategy with Explore the Universe 2175.
Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.