Games like Ultima Ratio Neptunus

An alien star descended upon Earth, bringing with it a series of unnatural phenomena that corrupted the planet’s ecosystem. The seas continued to rise until both humanity and the land itself were swallowed beneath the waves. Now, the dark ocean floor is littered with sunken ruins and strange creatures. Can you make it back alive as horrors close in around you? An alien star descended upon Eart… If you enjoyed this game, see our list of games similar to Escape The Abyss.

44%Game Brain Score

Most mentioned positive aspects:humor, gameplay

Most mentioned negative aspects:story, monetization

73% User Score Based on 11 reviews

Submeris A deep-sea mining adventure filled with exploration, danger, and survival beneath a mysterious island! Dig. Upgrade. Descend. And uncover the treasure buried deep below. --- About the GameSubmeris invites you into an immersive underwater experience combining exploration, mining mechanics, and survival gameplay beneath a remote and mysterious island. Start with just a simple … If you enjoyed this game, see our list of games similar to Submeris.

Deep Drift: Signal Below is a 2D pixel action-adventure game centered around deep-sea exploration, resource management, and risk-based decision-making.Begin your journey from the safety of shallow waters and descend through coral reefs, kelp zones, current-filled caves, and abyssal depths covered in dark mist. As you dive deeper, water pressure rises, oxygen steadily drains, and the creatures lurk… If you enjoyed this game, see our list of games similar to Deep Drift Signal Below.

43%Game Brain Score

Most mentioned positive aspects:music, graphics

Most mentioned negative aspects:story, stability

69% User Score Based on 13 reviews

Silent Depths is a turn based tactical RPG with roguelike elements set in a post-apocalyptic underwater world. Many generations have lived and died since the apocalypse happened, and the reborn by drowning mankind now survives in enormous submarines known as "Arks". You are leading one of those, and must ensure survival of your small society through a sea of monsters, human or not. The game consi… If you enjoyed this game, see our list of games similar to Silent Depths.

94%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

94% User Score Based on 600 reviews

When they built the floating cities, they had no idea an insidious threat lurked deep below...Feed the Deep is a compulsive lovecraftian roguelike inspired by the likes of Dome Keeper and Spelunky. Dive into an ever-changing system of undersea caves. Collect resources that can be traded for upgrades and items. Explore ever deeper, managing dark spaces, limited oxygen, and hostile wildlife, and com… If you enjoyed this game, see our list of games similar to Feed the Deep.

35%Game Brain Score

Most mentioned positive aspects:graphics, atmosphere

Most mentioned negative aspects:gameplay, story

45% User Score Based on 29 reviews

Stardiver is a sci-fi, single-player, action-adventure game where you pilot a ship, fight enemies, and slay Bosses. The game takes place entirely underwater.Stardiver will take you to an unknown world in which you’ll experience exciting fights, and discover new species and places. And you’ll take care of resources supply, crafting items in your base, and developing your own ship. If you enjoyed this game, see our list of games similar to Stardiver.

Guide humanity’s last colony ship through procedurally generated worlds, dangerous choices, alien encounters, and signal decoding puzzles. Manage dwindling systems, read each planet’s visual clues, and decide where civilization begins again or ends forever. If you enjoyed this game, see our list of games similar to Stellar Broadcast.

Sinking Eternity is a single-player underwater exploration RPG. Survive extreme depths, hide from dangerous sea creatures, and uncover the secrets of a civilization lost for millennia. If you enjoyed this game, see our list of games similar to Sinking Eternity.

95%Game Brain Score

Most mentioned positive aspects:gameplay, atmosphere

Most mentioned negative aspects:grinding, optimization

95% User Score Based on 569 reviews

Every descent is a deadly gamble. DIVE or DIE in the cursed abyss, face Eldritch horrors to uncover the mystery of the black rain. Scavenge and upgrade, recruit and sacrifice. Save your camp... The Flood is coming. If you enjoyed this game, see our list of games similar to Dive or Die: Children of Rain.

87%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, grinding

87% User Score Based on 5,232 reviews

We Need to Go Deeper is a 2-4-player cooperative submarine rogue-like set in a Jules Verne-inspired undersea universe. In the game, you and your crew must embark on many voyages into a mysterious undersea trench known as The Living Infinite. If you enjoyed this game, see our list of games similar to We Need To Go Deeper.

71%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:replayability, stability

71% User Score Based on 2,373 reviews

FarSky is a short survival game in the depths of the Ocean. Collect all the pieces of your submarine and reach back the surface. If you enjoyed this game, see our list of games similar to FarSky.

The Horde has consumed humanity’s last line of defense. An unknown virus has swept across the globe. Cities have fallen, and civilization has collapsed. As a newly deployed operative, you are sent to the front lines of the infected zones, armed with weapons, tactical equipment, and defensive structures to protect humanity’s final hope against endless waves of the undead. Survive the Horde … If you enjoyed this game, see our list of games similar to Survive the Horde.

SPACE EXPLORER: Way Home (CONTAINS FULL SOURCE CODE + ASSETS) Tech Used: Three.js, JavaScript, HTML, CSS Lightweight browser-based game, with the option to be converted into an Electron desktop application. **Short Description** Lost 7,850 light-years from Earth. Explore an infinite universe, harvest resources, survive cosmic dangers, and guide Commander Nova back home.* > *The universe is inf… If you enjoyed this game, see our list of games similar to SPACE EXPLORER - WAY HOME (SOURCE CODE + ASSETS).

[h1]Dungeons of Uhr – A First-Person Survival RPG[/h1]Descend into the Depths… If You DareIn Dungeons of Uhr, you awaken in a vast, uncharted cave system with nothing but your wits and a strange letter. The air is thick with the scent of damp stone and something far older—something watching from the shadows. To survive, you must explore, scavenge, and fight your way through twisting tunnels, forgo… If you enjoyed this game, see our list of games similar to Dungeons of Uhr.

IntoTheAbyss IntoTheAbyss is an immersive underwater exploration game where you command a submarine navigating the mysterious depths of the ocean. Prepare to embark on an exhilarating journey filled with breathtaking underwater landscapes, hidden treasures. Game Features: Stunning Underwater Environments: Dive into beautifully crafted oceanic worlds, uncharted abysses. Resource Management: K… If you enjoyed this game, see our list of games similar to IntoTheAbyss.

Dive into the depths of "Deep Down," a thrilling Action RPG where you play as a brave miner exploring procedurally generated caves filled with valuable ores and hidden dangers. In this immersive adventure, each day presents new challenges and opportunities as you gather resources, upgrade your tools, and uncover the secrets buried deep beneath the earth. Explore Procedurally Generated M… If you enjoyed this game, see our list of games similar to Deep Down.

93%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:stability, grinding

93% User Score Based on 72,685 reviews

Dive into uncharted waters in Subnautica 2, the hotly-anticipated sequel to Subnautica and Subnautica: Below Zero. Adventure alone or with friends as you try to survive on an all-new mysterious alien planet. If you enjoyed this game, see our list of games similar to Subnautica 2.

This is an open world 3D gunfight game based on the law of the jungle, which emphasizes the survival of the fittest. It is also a mission centered combat game based on experience leveling. It combines elements of role-playing, tactical strategy, and experience leveling. If you enjoyed this game, see our list of games similar to EagleRoad:WorldRise.

THE LAST EARTH FIGHTER AN ATMOSPHERIC CINEMATIC SHOOT 'EM UP GAME... "The last defender of Earth… but sometimes, hiding is wiser than shooting." Key Features: Six unique environments, each with its own gameplay twist — from deep space and scorching deserts to underwater worlds and humanity's shattered remains. Reflexes meet strategy — dodge, hide, time your movements, solve environmenta… If you enjoyed this game, see our list of games similar to The Last Earth Fighter.

A Living Archive of AnomaliesPhantom Containment is built around a growing archive of entities, aberrant species, anomalies, and forgotten civilizations discovered throughout Helix Planet. The long-term vision is an expansive and evolving bestiary that continues to grow over time, introducing new species, entity classes, anomaly types, and ancient mysteries as the world expands. Origin Unkn… If you enjoyed this game, see our list of games similar to Phantom Containment.

85%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

85% User Score Based on 520 reviews

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! If you enjoyed this game, see our list of games similar to Ocean Keeper: Dome Survival.

87%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

87% User Score Based on 448 reviews

Quasimorph: End of Dream is the first chapter of the extraction turn-based RPG Quasimorph. Confront your fears in brutal shootouts with PMC -fighters and demons and try to survive to complete your mission and bring the gear back to your spaceship! If you enjoyed this game, see our list of games similar to Quasimorph: End of Dream.

66%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:optimization, gameplay

66% User Score Based on 188 reviews

A sci-fi underwater survival and exploration game If you enjoyed this game, see our list of games similar to INFLUXIS.

84%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, grinding

84% User Score Based on 1,005 reviews

Slay. Loot. Sell. Survive! Dive into a first-person blend of hack'n'slash roguelike and shop management. Plunder deadly dungeons for loot, escape with your life, craft, and stock your shelves. Then risk it all once more for profit! If you enjoyed this game, see our list of games similar to Fell & Sell.

85%Game Brain Score

Most mentioned positive aspects:story, atmosphere

Most mentioned negative aspects:emotional, grinding

85% User Score Based on 285 reviews

There's Nothing Down There is a short undersea horror exploration game. Descend into a sinkhole at the bottom of the ocean and discover the remains of a lost, yet not dead, civilization. If you enjoyed this game, see our list of games similar to There's Nothing Down There.

54%Game Brain Score

Most mentioned positive aspects:graphics, humor

Most mentioned negative aspects:gameplay, grinding

54% User Score Based on 109 reviews

Tidal Nexus Online is a submarine themed old school open world MMO. Fight with monsters, trade and collect valuables in the depths to upgrade your sub. Join clans, participate in world events, make friends and enemies along the way. If you enjoyed this game, see our list of games similar to Tidal Nexus Online.

86%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, stability

86% User Score Based on 8,638 reviews

In The Last Caretaker, you play a reawakened machine with a mission to secure humanity's future. Craft tools and weapons from salvaged technology, navigate a treacherous ocean world, and explore forgotten facilities that hold the key to humanity's survival. The Earth has been swallowed by the ocean as towering megastructures rust under a yawning sky. The Last Caretaker isn't just about survival, i… If you enjoyed this game, see our list of games similar to The Last Caretaker.

70%Game Brain Score

Most mentioned positive aspects:gameplay, humor

Most mentioned negative aspects:grinding, story

70% User Score Based on 88 reviews

Visit the unforgiving world of the Decision Series, where survival isn’t guaranteed, and every decision counts. The Decision Legacy Collection brings together all four iconic entries in the classic franchise for the first time on Steam. Experience the series that defined action-strategy and city defense in the Flash era, now available in this 4-pack bundle.Decision 3Humanity’s survival rests on mo… If you enjoyed this game, see our list of games similar to Decision Legacy Collection.

82%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

82% User Score Based on 118 reviews

Behold the first-ever Tactical Extraction Looter where you pit your courage and leadership against fears made manifest: the Dreadweavers. Lead a band of scavenger roughnecks into a devastated boom town of the alternative 1900s. Get in, face the monsters, grab what you can carry and get out. Alive. If you enjoyed this game, see our list of games similar to Nightmare Frontier.

64%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, replayability

64% User Score Based on 862 reviews

Discover and mine resources for construction, light your way in the dark, explore and expand into your surroundings to advance your research. Capture the diverse, highly-adapted flora and fauna of the deep, but beware: the darkness hides unexpected horrors, with only the light keeping them at bay. If you enjoyed this game, see our list of games similar to Surviving the Abyss.

78%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, optimization

92% User Score Based on 36 reviews

What is Arhaekon? A challenging roguelike, turn-based RPG dungeon crawler set in a grimdark world on the brink of collapse. You lead small bands of units through procedurally generated dungeons, battling corruption and eldritch abominations to save humanity. Is it finished? Yes, Arhaekon left Early Access and is officially released since July 4th 2025. Why play this instead of other similar… If you enjoyed this game, see our list of games similar to Arhaekon.

72%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:optimization, replayability

72% User Score Based on 683 reviews

In this game you will try on the role of the chief mech engineer. You can design mechs, assembly and launch reactors, regulate weapons and, of course, send mechs into battle. If you enjoyed this game, see our list of games similar to Mech Engineer.

60%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

70% User Score Based on 37 reviews

Red Rogue Sea is a roguelike strategy game that puts you in the shoes of a pirate captain and their crew. Manage your vessel as you sail through the treacherous waters of the archipelago, interact with the scum that inhabit it, and engage in battle using a tactical deck-building system. If you enjoyed this game, see our list of games similar to Red Rogue Sea.

90%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

96% User Score Based on 1,638 reviews

Critic Score 79%Based on 5 reviews

Shape humanity with the power of the gods in Reus 2. Choose your giants, combine natural elements, and manipulate fate to guide the path of civilization. The choices are yours, and so are the consequences. If you enjoyed this game, see our list of games similar to Reus 2.

45%Game Brain Score

Most mentioned positive aspects:graphics, atmosphere

Most mentioned negative aspects:gameplay, story

65% User Score Based on 20 reviews

Planet: Voidregula 6Hazard class: Not assigned Scan result: Suitable for colonization. Terraform with caution! Status: Prepared, the first stage of settlement is underway. Problem: Communication with the planet is completely interrupted. We are sending an expedition. About the Game A mix of roguelike shooter and survival on an unknown planet, featuring persistent progress and a coz… If you enjoyed this game, see our list of games similar to Ammo and Oxygen.

75%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

78% User Score Based on 946 reviews

Critic Score 67%Based on 4 reviews

Subterrain is uncompromising Sci-Fi survival on Mars! Manage the entire colony single-handed! Craft, Research, Explore and Fight against evolving mutants. Vast open world and randomly generated levels to explore! Can you survive long enough to escape the horror? If you enjoyed this game, see our list of games similar to Subterrain.

88%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:replayability, grinding

88% User Score Based on 238 reviews

Stirring Abyss is an indie tactical squad-based game with strong RPG elements in which you uncover the ancient mysteries of the depths depicted in the classic vein of Lovecraftian horror. If you enjoyed this game, see our list of games similar to Stirring Abyss.

56%Game Brain Score

Most mentioned positive aspects:stability, atmosphere

Most mentioned negative aspects:gameplay, grinding

56% User Score Based on 55 reviews

A deadly virus plagues the city in Null County and the residents now roam the streets as flesh-eating zombies. Tactically loot the massive open world and build a self-sustaining zombie-killing fortress. Will you be able to survive the apocalypse or will you become one of the undead? If you enjoyed this game, see our list of games similar to Dead Unending.

48%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, stability

48% User Score Based on 273 reviews

Aquanox Deep Descent is a first person underwater vehicle shooter, in which players control a variety of customizable ships to engage in fierce battles in the dystopian deep sea world of Aqua. In the near future the Earth's surface has become uninhabitable. What remains of humankind lives in former mining and research stations, deep below the surface of the sea. Born and raised in the only wo… If you enjoyed this game, see our list of games similar to Aquanox Deep Descent.

59%Game Brain Score

Most mentioned positive aspects:emotional, graphics

Most mentioned negative aspects:gameplay, atmosphere

80% User Score Based on 25 reviews

Dead Hand is a turn-based tactical roguelike game set in a fully destructible procedural environment. Guide your Autonomous Weapons Platform in a fatalistic trek through a multiple level underground cave complex in order to fulfill your directives. If you enjoyed this game, see our list of games similar to Dead Hand.

64%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:gameplay, music

64% User Score Based on 85 reviews

You awaken to the dawn of a new world. It's streams are clean, the forests lush and the local wildlife is hungry. You're cold and in need of shelter as you hear other voices on the wind. You are not alone. Your quest: Establish civilization and secure their safety in this new world. Your Quest is a casual 2D Strategy/RPG with progressive gameplay where you gather resources to construct a vill… If you enjoyed this game, see our list of games similar to Your Quest.

86%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

86% User Score Based on 7,434 reviews

Critic Score 85%Based on 2 reviews

Saints & Sinners is a game unlike any other in The Walking Dead universe. Every challenge you face and decision you make is driven by YOU. Fight the undead, scavenge through the flooded ruins of New Orleans, and face gut-wrenching choices for you and the other survivors. Live The Walking Dead. If you enjoyed this game, see our list of games similar to The Walking Dead: Saints & Sinners.

64%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

64% User Score Based on 998 reviews

Critic Score 64%Based on 7 reviews

Forced into the deep oceans by a Great Flood that occurred countless centuries ago, humanity now lives trapped under a thick layer of unbreakable ice and their survival hangs by a tenuous thread. However, their penchant for perseverance is strong, and a new civilization has emerged with distinct kingdoms, religions and cultures. By a twist of fate you, an aspiring submarine captain, have been give… If you enjoyed this game, see our list of games similar to Diluvion.

78%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:replayability, optimization

78% User Score Based on 108 reviews

In a city driven by corruption, three hardened citizens rise to uncover a conspiracy threatening its fate. Define your playstyle and engage in lethal high-octane combat, or keep out of sight in gripping stealth action. If you enjoyed this game, see our list of games similar to Disjunction.

87%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:stability, grinding

97% User Score Based on 188,796 reviews

Critic Score 77%Based on 12 reviews

Survive in an underwater open-world If you enjoyed this game, see our list of games similar to Subnautica.

66%Game Brain Score

Most mentioned positive aspects:story, gameplay

86% User Score Based on 28 reviews

Merry Christmas From The Future! Merry Christmas from the future! May your holiday season be filled with festive cheer and enough energy to power a spaceship. May your stockings be filled with gadgets and gizmos aplenty, and may you have a holly jolly time with your loved ones (even if they're not human). Wishing you a holiday season that's truly full of love and health. Happy holidays! Since… If you enjoyed this game, see our list of games similar to Timewell: Trail of Celestes.

Deep in the Siberian taiga lies Velminsk, a secret Soviet research town that never appeared on any map. For decades, scientists conducted experiments here, studying the limits of the human mind, the effects of complete isolation, resistance to extreme cold and phenomena that science could barely explain. Some whispered that the researchers had gone even further, attempting to interfere with time i… If you enjoyed this game, see our list of games similar to Velminsk.

The belt is rich. The belt is dangerous. Break it open. (Please note: Screenshots are considered Work In Progress at this time, and will be updated as the game develops) Starbreaker is an open-world space sandbox about making your fortune at the edge of civilized space. Fly deep into procedurally generated asteroid fields wrapped around ringed planets and burning stars, crack rocks open with yo… If you enjoyed this game, see our list of games similar to Starbreaker.

HALLS OF JÖTUNN is a first-person atmospheric dungeon crawler set in the ruins of a forgotten Norse world where Ragnarök has already happened. Ragnarök is no longer a prophecy. It has become a state of the world — a slow collapse of memory, faith, and meaning that nobody noticed happening. You awaken at the edge of death, a broken warrior abandoned upon a rain-soaked battlefield. In that final … If you enjoyed this game, see our list of games similar to Halls of Jötunn.

Command a Nomad-class Frontier Runner and lead your crew on the edge of a fading galactic empire. Take on freelance contracts, explore unstable farlanes, upgrade your ship, and survive where civilization ends. If you enjoyed this game, see our list of games similar to Farlane.