Top similar games like Sin-Cay:

The Atomic Heart sequel brings you back to the retrofuturistic universe, full of new characters and dangers. The game immerses you in events on a global scale and raises the bar for what an open-world action RPG can do.

AMANZI - a stealth-action first person SCI-FI game. Currently in development - demo out soon! This game puts you in the shoes of a tech specialist discovering the secret of what has brought the city state of Amanzi to the brink of civil war. Stealth, hacking, and smart decisions are your best tools

Exodomia is a narrative-driven, action-adventure game set on the robotic world of Salakar V! In this fast-paced combat experience, you will encounter many dangerous creatures and enemies as you navigate a story of struggle and survival.

41 Hours is a first-person shooter dramatic game that follows the narrative of Ethan, a workaholic scientist in search of his long-lost wife. This is a one-hour prologue of the incredible, action-packed journey.

Transported back in time, you must help Tiki, an ancient mech beetle, escape the apocalypse. Your puzzle solving skills will be put to the test as you attempt to collect the fragmented pieces of his tablet which will empower him with the ability to stop any and all world-ending events.

Absylon7 - is a first-person survival-shooter with psychological thriller elements, in which you will have to find the culprits of a large-scale scientific disaster and save your family from death.

Hubris is a VR action-adventure game set in a unique and colourful Sci-Fi universe, with immersive movement options, including swimming, climbing, and jumping. Players will have to gather resources, craft food and upgrade their weapons to fight off alien wildlife, droids, and humanoid enemies.

The Time Plague is a steampunk first person shooter with a great story and lots of locations to explore. You play as a journalist drawn into a mysterious world of time travel and adventure, learning to handle dangerous ray guns and other strange technology to overcome the devious Morlocks.

Hellstorm: Reign is a story-driven first-person shooter game where you play as an advanced soldier from Itopia. In the game, you infiltrate the dystopian wasteland and complete missions assigned to you, all while uncovering the hidden secrets of Itopia.

Find yourself aboard a giant spaceship in IHAS, a gripping Sci-Fi adventure handcrafted by a solo Ukrainian developer. Experience intense FPS action, mind-bending puzzles, and epic boss battles.

Biorage is a high-intensity story-driven corridor FPS.

Explore a dystopian sci-fi world in KIRILMA: Helix Horizon, solve environmental puzzles, and uncover the truth behind a collapsed world.

You are Alex, a time-displaced astronaut unraveling the space station Theia doomed in both the war-torn 2185 and the post-apocalyptic 2385 to find your lost brother. Master an arsenal of time travel abilities and weapons in this sci-fi metroidvania FPS: Tempus Vitae.

AFTERGLOW - is an adventure game set in the post-war nuclear winter of 2058, where energy, weapons, and mods are valued above all else.

Explore a strange interconnected world, find weapons to shoot those that stand in your way, and discover hidden upgrades and abilities to discover even greater secrets in an action adventure first person metroidvania.

In The Apollo Project, you must survive against men and nature itself before it's too late. Harness the power of an alien artifact to infiltrate a top secret research facility to save the world from impending climate disaster. Can you make it out alive before it's too late?

The city is gone. Can you survive? Yuri is a soldier who is on training by C.A.P.I.T.A.L. which is an international military corporation. Can Yuri get out of the capital of Turkey alive and uninfected?

Welcome to Vakrex, a world brimming with life but plagued by conflict. You must sift through the occupational forces and hostile wildlife to investigate the cosmic phenomena known as Neon Rain. You don't call the shots on this treacherous planet, however. Evolve or die.

Irreversible is an immersive single-player VR narrative-driven adventure featuring branching dialogues, exploration of uncanny desert mysteries and shooter elements. Communicate via radio with your colleague Anna and face off against the local fauna in your struggle to make your way back home.

A portal-like puzzle game with stealth combat and unique missions for each level. It is the perfect combination of puzzle and FPS, with stunning graphic and great storyline to back it up.

Battle For Ercaton: Robot Uprising is a hardcore, story-driven first-person shooter that throws you into a world of ruthless machines and hidden secrets on the planet Ercaton.

Explore a mysterious alien world in this atmospheric Metroidvania shooter. A vast world awaits, but its greatest mystery is you.

You are a Test Subject, trapped in Chamber 7, with little chance of escape. You will have to dodge past all the obstacles that are in your way if you would like a chance to escape.

Can you get out of the auto-generation insane maze alone or with friends? The maze is full of useless items for survival, what if they won't help you, but the monsters will overtake you!

Asgard's Edda: Mechanical Threat is an action shooter. Play as one of Asgardian descendants, battling the ancient Architect and his nanobot army. Explore diverse locations, use heavy machine guns and traps in tactical combat, and upgrade your character in a rich mythological universe.

A 3-10 player space station scavenging social deduction game. Will you be able to meet quota with your team? Or will you do everything in your power to sabotage them as the traitor?

The Crisis Zone is a sci-fi exploration game with elements of horror in a dramatic atmosphere. Explore this open world and find information about how you got here and how you can escape from this quarantine zone. Avoid the monsters and security drones patrolling the territory

Explore abandoned outposts on the surface of Mars, driving a nuclear powered vehicle built in 1942. Find books and discs while you uncover the mysteries hidden under the red Martian sand.

A cinematic sci-fi experience set in a fractured future where humanity’s greatest experiment has already failed. Explore forbidden facilities, uncover lost truths, and question the cost of perfection in a world shaped by unseen architects.