Diluvian Ultra

Retro first-person shooter combining armor-breaking attacks with lethal finishing blows

Cresthelm Studios · Published by Fulqrum Publishing · Released Sep 28, 2023

Reviews: Mixed; 68% of 164
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 1 year ago; Sep 5, 2025
Minimum PC: GTX 770; 8 GB RAM · 6 GB disk; Full requirements

What is Diluvian Ultra?

This single-player first-person shooter follows immortal prince Atilla as he fights invaders aboard his tomb-ship, a vessel of flesh and stone. Chapter One contains ten levels and a hub. You fire guns, strike with a sword, dash, double-jump, and collect blood to upgrade weapons.

For you if...

+you like fast-paced fights that demand constant movement

Not for you if...

−you prefer open worlds to linear, level-based campaigns

What players say

68% of 164 reviews are positive

Players praise the pixel art and unusual science-fiction world, but criticize confusing layouts and scarce checkpoints. Recent reviews also report weapons disappearing, sometimes preventing further progress.

Screenshots and trailer

Diluvian Ultra system requirements

Minimum: GTX 770, 8 GB RAM, 6 GB of disk space.

As published by the developer.

Can my PC run Diluvian Ultra?

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Minimum

OS: Windows 10/11 (x64)
Processor: 2.6GHz dual core/or equivalent
Graphics: Nvidia GTX 770 - or equivalent
Memory: 8 GB RAM
Storage: 6 GB available space
DirectX: Version 11

Does Diluvian Ultra have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Diluvian Ultra run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

Sometimes shows mouse, keyboard or non-Deck controller icons
Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
Default configuration is not performant
All functionality is accessible with the default controller configuration
External controllers are not supported for the primary player

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 24
Steam features: Cloud saves, Family Sharing
Languages: Full audio: English. Text only: Russian, Simplified Chinese.

Does Diluvian Ultra use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam