
Dive into the Ocean Keeper – a cooperative roguelike where four survival miners defend their Mech Spider, fight with endless hordes of monsters, and dig for resources. Team up with your friends, upgrade between waves, and survive the deep caves, full of treasures… if you can.
Modeled estimate, not a reported figure. How we estimate →
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About
Fight endless waves of monsters, protect your Mech Spider, and mine resources in Ocean Keeper, a survival co-op roguelike. Play as one of four miners, upgrade your gear and Mech, and explore underwater dungeons. Face the ocean’s dangers and do whatever it takes to stay alive.

Team up with your friends and climb into the Mech Spider to kill thousands of monsters. Work as a team to protect your Mech – if it goes down, your crew will be defenseless against hordes of creatures.

Take a rest from endless battles and explore the caves in search of valuable resources and rare artifacts. But don’t get too comfortable – your team has just one minute to mine, upgrade your gear, and get ready for the next wave. If you are brave enough, you might find something truly powerful… just in time to face the bosses.

Mine resources from the ocean depths to unlock and upgrade powerful gear. Choose from 9 unique weapons – each with its own range, strengths, and playstyle. Don’t forget to coordinate with your team and plan your loadout beforehand: strategic positioning is key to protecting your Mech and surviving the endless waves.

In Ocean Keeper, no two waves are ever the same. Each brings new challenges, enemies, and opportunities for your team to adapt, strategize, and survive various underwater adventures. Upgrade your gear differently every time, uncover rare relics, and battle frightening bosses – you will never experience any run twice.
So gear up, dive deep, and may your Mech legs never rust.
Good luck, survival miners – the ocean is waiting.
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, French, Italian, German, Spanish - Spain, Hungarian, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese +4 more
Engagement
Hours played at review time, across 40 reviews with recorded playtime.
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
I hate to review this after only 24 minutes, but I wanna make it clear that I very much enjoyed the singleplayer variant of Ocean Keeper, so naturally I was excited to play this with a friend to try out the co-op version of it. The co-op version plays NOTHING like the singleplayer version at all. Firstly, your spider is entirely immobile during waves, which means the kiting strategy in singleplayer is nonexistent, and you're at the mercy of RNG for your weapons to do any remote damage. I will mention the game does explicitly tell you that the game is better played with 4 players, and no less. Here's the killing point for the game: There is no adjustment in difficulty for less than 4 players.; Not 2, not 3, just 4 player difficulty constantly. This is what kills the game for me because I'm not always going to have 3 other friends available at a time to play it, which means there's no reason to play the game at all if you have less than 4 players available. The reason I write this review is because I got suckered in by all the positive reviews suggesting how much fun the game is; I'm sad to say it isn't because the developers locked the difficulty at 4 players only with no forgiveness of less than. If the difficulty gets adjusted based on number of players in the future, I'll edit my review. Till then, it's a pass for me.
Not sure why this coop version of the game isn't just part of the first Ocean Keeper game and it is it's own thing. Very hard to find matches for this game online and it just tells you to host your own game. You do get AI teammates but they are just drones and very slow. I kept getting the shotgun weapon which doesn't have alot of range and when ranged fish come they can stay out of range of the shotgun and shoot the mech. Since the AI is random it doesn't target the ranged fish and they eventually kill the mech. There is no progression with this online version of Ocean Keeper. You can pick your mining tool and that seems to be about it. It makes sense that they give these keys out for free on their discord.
Please add more bosses, guys
Топчик
Ooof. This has to be the worst game I have played on steam. Played one game, balance is non existent. It requires 4 players so forget about playing it with a buddy. We attempted to play a second game, but the game just got stuck. Avoid.
no instruction, not a lot of player, no idea how to operate wtf! this game is bs
Decent game for its price
A fantastic multiplayer experience that encourages teamwork and strategic thinking. Diving into the ocean-themed challenges with friends is both fun and rewarding. Highly recommended for those who enjoy cooperative gameplay and marine adventures!
The sniper rifle at the end of the game is very strong. My friends were basically useless by that point
Add mech customization and more dynamic environments. Overall it’s pretty cool
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Trends
Concurrent players on Steam, sampled daily since tracking started.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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