Diluvian Ultra — Steam capsule
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Diluvian Ultra Free Download

by Fulqrum Publishing

Windows · Sep 27, 2023

Download Now Data checked on Steam: Oct 20, 2026
Fit check

Is Diluvian Ultra worth it for you?

We tell you who should skip it, too.

Play it if you…

Good fit
  • Single-player FPS fans who want fast movement and close-range combat
  • Retro sci-fi players who prefer colorful, fantastical settings over gritty ones
  • Action players who enjoy combining weapons to handle different enemy defenses

Skip it if you…

Saves you a refund
  • Players seeking a slow, methodical shooter rather than constant movement and rapid attacks
  • Players looking for a broad campaign at launch rather than 10 levels and a hub
  • Players who prefer realistic military settings over neo-gothic spaceships and fantastical imagery

Drafted from Steam store data with AI and reviewed by an editor · How we write fit checks · Report an error

Our take on Diluvian Ultra

Instead of treating a retro FPS as a purely grimy or industrial shooter, the game places its frantic combat in colorful pulp science-fiction imagery. Its weapon system also replaces simple damage dealing with armour removal followed by a lethal attack.

What is Diluvian Ultra?

Play as Atilla, an immortal warrior-prince awakened by an invasion of his tomb-ship.

Diluvian Ultra: Chapter One contains 10 levels and a hub, with 6 weapons, 30 upgrades, and 13 enemy types. Its combat uses two damage types: some weapons remove armour, while others deliver the killing blow. Movement includes double-jumps, dashes, cover, projectile deflection, close-range attacks, ranged fire, and ground slams. Blood upgrades weapons and power-ups can be collected during encounters. The arsenal combines traditional Tech weapons with living Organic armaments, including the sentient Squire Gun Bella. The colorful retro FPS takes place across neo-gothic spaceships and explores fanaticism, trauma, betrayal, and redemption. Future chapters are planned as paid DLC.

How Diluvian Ultra plays

01Dual-damage combat
Armour-stripping weapons must be combined with attacks that can finish exposed enemies.
02Mobility-focused fighting
Combat options include dashing, double-jumping, projectile deflection, ground slams, and ranged or close attacks.
03Weapon upgrades
Blood collected during play can be consumed to improve weapons, with 30 upgrades available across 6 weapons.
04Living arsenal
The weapon selection combines conventional Tech arms with grotesque Organic weapons and the sentient Squire Gun Bella.
05Chapter One campaign
The first chapter contains 10 levels, a hub, and 13 enemy types.

Diluvian Ultra compared to similar games

Diluvian Ultra is a single-player first-person shooter with 10 levels, a hub, weapon combinations, and mobility-based combat. Abyssus focuses on multiplayer shooting in a roguelite structure, with hand-crafted levels and weapons modified through ancient technologies.

Diluvian Ultra: platforms & release

Is Diluvian Ultra worth it?

It is worth it if: single-player FPS fans who want fast movement and close-range combat. Skip it if: players seeking a slow, methodical shooter rather than constant movement and rapid attacks.

Where can I download Diluvian Ultra?

Use the Download Now button on this page: it opens Diluvian Ultra's store page, where you can choose how to get it.

What platforms is Diluvian Ultra on?

Windows only.

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