Top similar games like The Gates of Neptune:

Blue Oath is a solo combat action-adventure game in which you play as a warrior swordfish who sets out on a journey to free a giant, cursed moray eel. Using powerful dash attacks, you can impale enemies and objects onto your beak, stack them, and throw them back as weapons or tools.

An Action Adventure 3rd person hack and slash game set in Mythological Japan. Travel as a trio of Samurai Heroes and switch between them as you fight enemies with the help of an Ally system. Perform special combo attacks as you travel across Japan, hell-bent on destroying the forces of evil.

Explore a living Earth 10,000 years after humanity. Observe wildlife, survive dangerous ecosystems, and build a growing Digital Vivarium from what you discover. Progress through understanding, not combat, in a world that continues without you.

Embark on a mystical journey through the ancient world of Nalani, where forgotten legacies and dark secrets await. Master elemental forces, confront powerful foes, and uncover the hidden truths that shape the fate of the realms. A deeply immersive action-adventure experience.

Navigate the darkness in Dead Reckoner, a stealth-action submarine game where survival depends on more than firepower alone. Slip through the shadows, elude your enemies, and exploit their weaknesses as a new recruit in a mysterious government initiative that will determine the future of humanity.

Ichor Burns is a high-octane action game set in the desolate world of Vesta. Master a dynamic combat system, seamlessly switching between sword and spell. Explore the expansive quarry, challenge the invading darkness, and unlock powerful abilities.

Embark on an epic odyssey to save your younger sister – and the whole of humanity – from mysterious dimensional invaders from beyond the starlit skies in Lost Soul Aside™.

In a futuristic city under dictatorship, a brave mechanic with an illegal electronic arm rises up against the dictator. Face dangers, unravel intrigues and overcome deadly obstacles, approaching an epic final showdown.

When his best friend fails to arrive at their secret meeting place, the young Khar warrior Coltec must leave everything behind to discover the terrible fate that has befallen his best friend in this Action-RPG, inspired by Dark Souls and Dragon's Dogma.

Dive into the waters of Scyla, a third-person 3D exploration adventure inspired by Lovecraft's universe. Discover the mysteries hidden into the depths as you pilot a submarine through a strange cave system. Run away from a criature that stalks you.

A sci-fi action-adventure game focused on physics-driven asteroid mining as a probe bot. Smash rocks together with a grapple hook, haul them home using a magnetic stasis field and cash in to upgrade your abilities. Solve puzzles and acquire new robotic friends as you explore a mysterious galaxy.

A RETRO-inspired 3D Action Adventure. End's Reach II is an exploration-heavy action adventure game set in an atmospheric and ambient science-fiction world. Gather weapons, guns, powers, collectibles, and utilize the new first-person gameplay mode in all new dungeons and levels.

Open-World Dungeon-Crawling Combat-Platformer

You're a Stardiver on a mission. Descend into the depths of an underwater world filled with wonder, mysteries, and peril. Discover the story behind the abandoned base. Explore this submerged planet and learn its history.

Prove yourself in the mysterious world of Mithem! Defeat your enemies using your companion while also protecting him courageous during frightening segments. Help Simon to find a way back home and restore a war-scarred world in a tale of friendship, hope and courage.

In a world ruled by blood and gods, a 12-year-old boy and a bloodthirsty panther must cooperate to survive. Their souls are unwillingly bound, and neither can escape without the other. Control two characters at the same time.

Embark on an atmospheric adventure with young inventor Kir and his loyal robot companion PIO to uncover the truth and save the ones they love. PIO: A Robot's Story is a Souls-lite adventure in the heart of a robot uprising. Fight for the fate of a retrofuturistic world and uncover its secrets.

A hack and slash parkour game set in a sci-fi world. Launch, is a young, agile delivery boy who finds himself battling this mega corporation. The game features fast parkour mechanics focusing on jumping and running your way through the world, often using the environment to your advantage.

Wukong 2088 is a survival rogue-like game where you play as the secret weapon of Sun Wukong in futuristic Journey to the West. You will resist the invasion of the Cyber TianGong, face endless waves of enemies and bosses, defeat them, and strengthen yourself to fight against the powerful Mega-Corp.

Geminum is a narrative-driven sci-fi anthology.By the year 3000, Earth has entered the Cryocene.Surface temperatures have plummeted below -150°C, leaving humanity with a harrowing choice: seek shelter in underground bunkers, or venture into the vast unknown aboard deep-space colony ships.

Jon Munro, ex-officer seeking his family; Alisa Rinaldi, rebel mechanic; Nikolai Kowalski, cunning smuggler; Trace, jailed robotics prodigy. United in a prison escape, they command the Warship Jolly Roger, dodging galactic authorities in an epic space opera game.

A fun 2-player online co-op pirate game for having a good time with your best buddy. Stranded on a cannibal island, your only chance of survival is to make the cannibals like veggie food. Go on quests, fly with birds, paddle in a barrel, and use your bubble shooter to fight sharks.

In deep-sea action-adventure game Pakicetus Redux, take command, choose your mission, and lead the escort submarine Salvation along a seafloor rift. Balance resource collection, upgrades, and the fate of human civilization as you battle an emerging enemy bent on stopping your search for a new home.

A silent narrative driven, fantasy, action-adventure game about a storm that brings an enraged army. A woman longs for her lost husband when the storm's war forces her to flee.

Imagine taking down a megacorporation with just a vacuum. Join Eco, a robot with one mission: save the world from the greedy billionaire Smogborne. Vacuum up your enemies, absorb and expel elements throughout the world to solve puzzles, and heal the corrupted biomes.

Become a warrior in this sci-fi/fantasy adventure! Iron Reckoning showcases a unique movement mechanic that will test your skill in preserving airborne momentum. Wield a variety of powers and master the combat to defeat your enemies, as you uncover the mystery behind a deadly machine threat!

EXISTENTIAL is a first-person story-driven puzzle game that offers a unique solution that will put your existence into the game world.

A hack n Slash action adventure game with manga inspired graphics. Explore a branching story that is integrally connected to the core combat gameplay

Soar the seas at the end of time. 65 million years in the future, the world has frozen over, and the oceans have been sealed under a thick layer of ice. Become a Tuai—a species that evolved from birds—and protect the Everwinter in this futuristic underwater action game.

Manga Hero is a love letter to mangas. It is an action RPG set in a world composed of stories inspired by different classic mangas. The protagonist, Hiro, embarks on a journey across this magical land in search of his missing mangaka father.

A hand-crafted open-world Adventure RPG set in a sci-fi colony. Explore, take on quests, fight hostile creatures in real time, and shape a branching mystery through dialogue choices. The Maroon heroine signals the Frog People with a vital tongue gesture — bridging worlds on the edge of the unknown.