Cathedral 3-D

Arena shooter where you defend a chest containing your heart

Unfinished Games · Released Oct 28, 2020

Reviews: Mixed; 60% of 136
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 4 years ago; May 25, 2022
Minimum PC: HD 5000 (or other compati…; 1 GB RAM · 0.1 GB disk; Full requirements

What is Cathedral 3-D?

You play a monster defending a floating cathedral from human invaders in this free, single-player first-person arena shooter. During survival runs, you burn enemies with three attack types, double-jump around the arena, and carry your heart’s chest when collecting ammunition. Staying alive longer unlocks new abilities.

For you if...

+you enjoy fast-paced shooting with an emphasis on movement
+you like chasing high scores in solo survival runs

Not for you if...

−you want a multiplayer shooter with cooperative or competitive matches

What players say

60% of 136 reviews are positive

Players praise the retro art style. A recurring complaint is how quickly enemies can kill you, including by damaging the chest.

Screenshots and trailer

Cathedral 3-D system requirements

Minimum: HD 5000 (or other compati…, 1 GB RAM, 0.1 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 7 64-bit
Processor: 1.7 GHz Intel Core i7 (4th gen, Haswell)
Graphics: Intel HD Graphics 5000 (or other compatible with OpenGL 3.3)
Memory: 1024 MB RAM
Storage: 100 MB available space

Does Cathedral 3-D have co-op or multiplayer?

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

Single-player

Does Cathedral 3-D run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows, macOS, Linux
Achievements: 28
Steam features: Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Turkish.

Does Cathedral 3-D 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