Infernal Radiation

Action RPG with demon battles tackled in your chosen order

Asmodev · Published by Ultimate Games · Released Dec 28, 2020

Reviews: Mostly Positive; 79% of 56
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 5 years ago; Dec 28, 2020
Minimum PC: GTX 660; 8 GB RAM · 3 GB disk; Full requirements

What is Infernal Radiation?

Set on Halloween Island, this 2D action RPG follows an exorcist dealing with possessions after a power plant accident. You explore the island, receive help from rescued residents, and fight demons with distinct abilities and attack patterns.

For you if...

+you enjoy simple mechanics paired with demanding opponents
+you want to play cooperatively on one screen

Not for you if...

−you prefer relaxed fights that require little practice
−you want nonstop combat without exploration between encounters

What players say

79% of 56 reviews are positive

Players praise the absurd dialogue, soundtrack, and rhythm-based combat. Recent reviews criticize the lengthy grind for the maximum-level achievement.

Screenshots and trailer

Infernal Radiation system requirements

Minimum: GTX 660, 8 GB RAM, 3 GB of disk space.

As published by the developer.

Can my PC run Infernal Radiation?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS: Windows 7/8/10
Processor: Intel Core i3 or AMD FX equivalent
Graphics: GTX 660
Memory: 8 GB RAM
Storage: 3 GB available space
DirectX: Version 9.0c

Does Infernal Radiation have co-op or multiplayer?

Yes: co-op split-screen. It also has a single-player mode.

Does Infernal Radiation run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 36
Steam features: Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Polish, Portuguese - Portugal, Russian, Simplified Chinese, Turkish.

Does Infernal Radiation 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 28, 2026. How to filter AI games on Steam