Single-player games like Operation Terra
Below are 9 single-player Steam games similar to Operation Terra, 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 Operation Terra page.
Ranked picks
- 1
Within the Cosmos
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Within the Cosmos is a sci-fi RPG. After awakening in a secluded star system, you soon discover a fractured human society grappling with an emerging android threat. Explore planets, uncover mysteries, and navigate differing philosophies. Your choices will shape how the story unfolds.
- 2
Jack Walker: Ethereal
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Jack Walker: Ethereal is a Sci-Fi/Action/RPG game for advanced VR players, with unique movement and combat mechanics. You play as an intergalactic bounty hunter who can fly and shoot laser beams out of his wrist as well as slow down the time. The fate of the universe is in your hands...
- 3
Exovoid
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
——Thank you for supporting Exovoid—— we appreciate it. EXOVID IS ON HOLD. We realized it's too ambitious for now. Instead, we regrouped to bring you... ——EXOVID CARNAGE—— a High-Octane Wave-Based Arena Shooter. !!!Try it Now!!! (We will return to Exovoid someday.)
- 4
Nova Impact
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Nova Impact puts you in command of your ship as an elite Zenith pilot. Fight in the arena, earn credits, optimize your build in this fast-paced SSRPG (Space Shooter RPG). Survive the swarm, once at the top of the ranks, face rival pilots in unique 1-on-1 duels to claim your spot as the #1 champion !
- 5
Frame of Suffering
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Master both man and machine to escape the Ancient Temple. Customize your Hero and a modifiable Combat Frame to slay hordes and gatekeepers. Scavenge tech, uncover the Temple's history, and evolve your build in this Sci-Fi ARPG Roguelite. You're a prisoner - freedom lies at the heart of the Temple.
- 6
Galactic Vault
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action with Operation Terra.
Build your weapon to its full potential in Galactic Vault, a fast-paced FPS roguelite. Discover endless upgrade combinations, craft diverse builds, and unleash devastating abilities. Get ready to infiltrate high-security vaults and recover lost tech.
- 7
M.A.S.S. Builder
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Commander, customize and build your Mechanical Assault Skeleton Suit (M.A.S.S.) and lead the fight against an alien invasion bent on exterminating the human race. The fate of humanity is in your hands.
- 8
Humanity Lost
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares Action and RPG with Operation Terra.
Will you save humanity? You are on a mission to find a new planet for humans to inhabit. In this story driven FPS space opera you will explore open world planets, find weapons, upgrade your character, and befriend alien species.
- 9
Wicked Times
Single-player alternative to Operation Terra — playable solo, no multiplayer required. Shares RPG with Operation Terra.
Wicked Times is an RPG manager/autobattler. Embark on a journey to stop the demon Kugraltha and his minions who occupy the lands. Collect gold. Upgrade your equipment. Find new towns and activities that give you extra experience and gold along the way. Gorgeous photos used throughout.