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
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!
- 2
ITER-8
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.
Welcome to the surface, ITER employee #8. Mine the Pillar, upgrade your tools, defend your base, reach the top... or die miserably. Each expendable worker pushes the mission forward - one glorious, replaceable iteration at a time.
- 3
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!
- 4
The Riftbreaker
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 Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 5
The King is Watching
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Indie with Ocean Keeper Co-op Drill Multiplayer.
The King is Watching is a roguelite kingdom builder. Rule by the power of your royal gaze! Decide between producing resources, training armies, or balancing both, while adapting to unique events every run
- 6
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.
- 7
Monsters are Coming!
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.
Beware, Monsters are Coming! In this Tower-Survivor rogue-lite, you protect an ever-moving city from unrelenting hordes. Gather resources, fortify defences, and survive for as long as you can. Will you reach the Ark?
- 8
Calyx
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 9
Last Pirates: Die Together
Single-player alternative to Ocean Keeper Co-op Drill Multiplayer — playable solo, no multiplayer required. Shares Action and Adventure with Ocean Keeper Co-op Drill Multiplayer.
An online co-op horror experience for up to 4 players. Use your elastic arms to grab valuable loot for your captain. But be careful, danger lurks around every corner trying to take your booty!