Single-player games like Ocean Keeper Co-op Drill Multiplayer
Below are 9 single-player Steam games similar to Ocean Keeper Co-op Drill Multiplayer, 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 Ocean Keeper Co-op Drill Multiplayer page.
Ranked picks
- 1
Steel Swarm: SURVIVOR
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Steel Swarm: SURVIVOR is a fast-paced roguelite survivors game where you obliterate swarms with your drones. Set up formations, upgrade your drones, and overwhelm hordes of metal in each run. Take on enemy waves solo or in multiplayer co-op!
- 2
Echo Zero
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Descend into a dangerous, procedurally generated sci-fi underworld. Explore, gather resources, uncover powerful wargear and upgrades, rally your droids, build and defend your base, and battle a mysterious new species on the verge of breaching the surface, either alone or in co-op.
- 3
Dome Keeper
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!
- 4
Repel The Rifts
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Indie with Ocean Keeper Co-op Drill Multiplayer.
Repel the Rifts is a roguelite tower defense game where you lead a commander through an alien world, uncovering new terrain each wave, drafting powerful upgrades, and constructing defenses to hold back the chaos.
- 5
Space Bross
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Your chicken has been kidnapped, and that’s all it takes to send a retired astronaut into full galactic mayhem. Space Bross is a hand-drawn 2.5D tower defense & action roguelite where you’ll build bases, fend off alien hordes, and blast your way across planets to bring your feathery friend back.
- 6
A.V.E.N.A.
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Pilot disposable combat drones through the Primal Portal in a sci-fi action roguelike. Customize your drone, fight through various missions, recover research data and alien technology to enhance your drone setup for the next session.
- 7
SteelGuard
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Pilot customizable mechs in an epic battle against hordes of enemiesor dive into intense PvP battles where precision aiming can turn the tide, or let your mech's auto-firing system handle the heat of combat. With rogue-lite elements, each run offers a unique challenge and opportunity for growth.
- 8
Wall World 2
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
The adventure in the mysterious world of the Wall continues! Pilot your robospider into its depths, uncover lost artifacts and technologies, upgrade your exosuit and spider, and battle the horrors lurking in the dark. Unravel the mysteries buried in the depths of the Wall!
- 9
Ocean Keeper: Dome Survival
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper Co-op Drill Multiplayer.
Explore dungeons, fight hordes of monsters and survive on a huge map. This is Ocean Keeper - an action roguelike with tower defense elements. Mine resources in caves, customize your Mech Spider, upgrade different weapons and face dangerous bosses that won't leave you a chance!