Top similar games like Diluvian Ultra:

Operation Excision is a retro styled first person shooter with visuals inspired by 1980’s vector graphic arcade games, and a setting and story influenced by 1970’s and 1980’s science-fiction movies, books, and comics.

CASTILLO: The Nine Circles is an FPS Collectathon. Collect power shards in each circle of hell to unlock new areas and progress on your quest through 9 diverse worlds. Embark on a journey through the circles of Hell, using unique abilities and weapons.

Extraneum is an old-school, sci-fi single-player first person shooter with an emphasis on exploration and secret hunting. Fight your way through biohacked monstrosities and stop their progress before they take control of the entire world.

Relentless Frontier is a fast paced sci-fi FPS running on the GZDoom Engine, with a strong focus on mobility, strategy, and exploration. Use your Omnistruct to replicate new weapons and abilities to help you traverse the terrain and demolish threats, while escaping from Ross 128-b in one piece.

90s-style shooter meets Metroidvania. Step through a portal to a mysterious alien world, and discover the fate of the Lost Expedition.

Wolfenstein 3D took you into the past, thrusting you into a world at war. Blake rockets you into the future where a sinister madman, using genetics to create an army of bizarre creatures, is waging war on Earth. Blake has more of everything!

A boomer shooter set in 1930's Shanghai. Fight your way through Shanghai and greater regions of China, in search of treasure and adventure.

It's the 22nd century: Galactic travel is commonplace, peace is at hand, and the future looks bright - until Goldfire's plan to unleash an army of military mutants shocks the galaxy. Dr. Goldfire, a brilliant bio-scientist whose morbid research led to incredible genetic improvements in humanoids and aliens, has gone power crazy.

An atmospheric FPS where you can shoot yourself to fight against the Dreamers Disease. Go deeper and deeper into your dreams to kill the seed of the disease to save other people from getting infected. The game is inspired by modern boomer shooters with a story focused narrative.

A retro 2.5D sci-fi FPS shooter with modern mechanics with custom engine. Features completely destructible environments, bullet-time slow motion, Newtonian physics, dynamic lighting and more fun features.

Next Chapter of Project Warlock is here. A retro fps shooter that honors the legacy of classic shooters like Doom, Wolfenstein and Hexen picks up the story of Warlock mixing frantic gunplay, with powerful magic spells and perks and skills based character customisation.

Second sun is a RPG High-octane FPS which uses a mix of open maps with procedurally generated dungeons, points of interest, and loot to make every encounter exciting! Use your inhuman abilities to save the Empire from being destroyed and prevent the world from being taken over by evil.

MULLET MADJACK is a single-player fast-paced FPS that brings you directly inside a CLASSIC ANIME. Power up your character and reach the last floor; Beat your best time or try again. Haste makes waste… OF YOUR ENEMIES!

H.O.G.S is an immersive fps where you play as a pig cop in a dystopian England ruled by pigs. Engage enemies in fast-paced combat where the difference between life and death is a well-placed bullet, an object to the head, or a boot to the face.

Astro Engineers is a co-op puzzle game for both virtual reality and desktop where you have to solve puzzles, work together and explore to complete different missions.

Find a way out of here and get back to earth in FLAW, a retro-FPS inspired by cult classics: Unreal, Quake 2, Half-Life and many others. You and the Flaming Dawn’s passengers were looking for a better life among the stars, you have yet found only despair and darkness.

Welcome to KILLFISH. In this Action/FPS game, you'll dive into a captivating world where robots have taken control on a factory. Embark on an epic adventure filled with a unique hook mechanic that will give you freedom to explore and kill in flashy ways.

SPRAWL is a hardcore retro FPS set in an endless cyberpunk megalopolis. Escape the walled city and take on the militarized government of the sprawl. Fueled by the blood of your enemies and a mysterious voice in your head, make your way towards the spire to topple whatever lays within.

Moon's haunted. Really. Figure out what happened there, unravel its mysteries, and uncover why we really raced to land on its surface in 1969. Fill up on oxygen, load up your guns, and set out on a celestial FPS investigation that starts on the Moon and leads across the universe.

Play as the Sourman as you venture through the hostile jungles in this Retro-FPS Platformer!

Wizordum is a retro FPS that puts you in the role of a Mage on a quest to track down the source of Chaos. With a wide arsenal of spells and magic items, battle your way through the world of Terrabruma in this unique blend of classic 90s shooters and modern gaming elements.

Take on the role of the legendary monster hunter and brilliant inventor, professor Abraham Van Helsing, in a new telling of his story in this FPS action game, where he fights to save the steampunk land of Dawnlight, plagued by a sudden invasion of terrifying monsters.