
Screenshots

Watch trailer on Steam ↗Infernal Radiation
Asmodev · Published by Ultimate Games · Official site ↗
Very Positive — 87% positive (62 reviews) · 36 achievements
Last updated 27 Sept 2026
Smash demons and deflect bullets in a hardcore arcade clicker with the RPG elements.
£7.49
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Action, Indie, RPG, Simulation · 2020 · More £5 - £15 games
Embark on a relentless journey as you smash demons and deflect bullets in this hardcore arcade clicker from Asmodev. Experience the unique blend of action, RPG, and simulation elements that define Infernal Radiation.
About this game
YEAAAAAAH!!!
About the Game
On Halloween Island, engineers test the innovative way of generating heat. The roots of the power plant reach deep into the earth, all the way to the heart of Hell, where the reactors obtain energy from burning souls.
When an accident happens, the infernal radiation contaminates the earth. Inhabitants living in defiled areas struggle with numerous possessions. An exorcist is needed.

- Help of the rescued residents.
- Free exploration of the rich world.
- The choice of the order of exorcisms.
- Cooperation on one screen.

- Very simple gameplay, very difficult opponents.
- Dynamic clashes.
- 20 demons with unique abilities and battle patterns.
- A dark history of the island hidden in the reports of the possessed.

Do you want more games from the Asmodev universe? Play Priest Simulator.
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7/8/10
- Processor: Intel Core i3 or AMD FX equivalent
- Memory: 8 GB RAM
- Graphics: GTX 660
- DirectX: Version 9.0c
- Storage: 3 GB available space
- Sound Card: DirectX compatible
Supported Languages
Latest news
AnnouncementsOfficial
December 2024
Greetings, comrades. https://clan.fastly.steamstatic.com/images/35280558/9760652e58f128f59776eef46c2b84e66f99236b.jpg As the year draws to a close, here’s a quick rundown. Before you tune out, let me present the agenda—maybe one of the topics will catch your interest, and you can jump straight to it: 1. **Priest Simulator** 2. **Mercyful Flames** 3. **Taxi Simulator** 4. **Your Principal** Priest Simulator Our most recognized franchise so far is keeping us busy: The **Vampire Show** has left Early Access. However, we’ve already received feedback about some messed-up lipsync and issues with the final raid not registering correctly. We’ve fixed the first problem, and we’re working on the second. A patch is on its way. https://store.steampowered.com/app/2947900/Priest_Simulator_Her_Ghost_DLC/ We’ve released *Her Ghost*, a DLC for *Vampire Show*, offering about an hour of new gameplay. Some of you may remember that we declared the game finished months ago, but for various reasons, the launch was delayed. Sure, any game can be endlessly improved, so we added a few more cards to the Trello board. Plus, we wanted to experiment with creating DLC, so we decided to add new content roughly on the scale of *Heavy Duty*. Big thanks to everyone who purchased it. https://clan.fastly.steamstatic.com/images/35280558/a600c086e2e6a9d8b55b48b80c2334850957a4b6.jpg We also made the soundtrack available some time ago. You can listen to it on Spotify or YouTube. The music video for the standout track *Legion* is doing pretty well at festivals: - Winner: Best Polish Animated Music Video at PL Music Video Awards 2024 - Winner: *Black Horse of Music Videos* at Ars Independent 2024 - Semi-finalist: Azyl Shorts 2024 It was also officially selected for: Animakom Fest 2024, Żubroffka 2024 (Music Video category), Animest 2024, Splat!FilmFest 2024, Grand Video Awards 2024 (Music Video category), Offeliada 2024, Linoleum 2024. Watch it here: https://www.youtube.com/watch?v=oMop-7BM4ds That’s not all...Read full article on Community Announcements (Mim)Community & EventsOfficial
Mercyful Fest
https://clan.akamai.steamstatic.com/images/35280558/018f95ce907640b9908293a04e519225667d171e.png Yello. Didn't want to spam you with some demo, after all it's just demo, and you deserve it all... But decided to change my mind. Better late than never. It just hit me that there is no business without spam, and we need this business to keep rolling, if you want more games. Rolling demands your support. So just hit the button, check the demo, add the game to your wishlist or just go to sleep. https://store.steampowered.com/app/1066740/Mercyful_Flames_The_Witches/Read full article on Community Announcements (Mim)AnnouncementsOfficial
01-2024
https://clan.akamai.steamstatic.com/images/35280558/ceb64974e6fa73e6364dff3e6ff1a9025e58a0ee.png Hello, a short summary of what's going on here, because apparently you're worried about us. At least the more sensitive ones. Priest Simulator: Vampire Show is waiting not so much for being finished, but for the right arrangement of stars and other events that will allow it to emerge from Early Access in full glory. If you don't know what I'm talking about, it means it's about money. There can only be two premieres, and only twice you get a chance for visibility, which can provide decent earnings. That's why we're waiting for synchronization. With what? I won't say it because of the NDA and because it's a surprise. Booze Masters: Freezing Moonshine is already fully released, but it will be even more complete. In a few days we will release a patch that will improve various fucked up attractions, such as clumsy jumping, half-baked cutscenes or unfunny dialogues. JOKE, we won't correct the last one issue, because we love you precisely because we can make fun of you. And love is the most important thing. Top1. Right after the money from Priest. Your Principal is waiting until I have the processing capacity to finish the cutscenes. There isn't as much to do as in previous games, but for now I want to finish another project. The one from the next paragraph. Mercyful Flames: The Witches is the closest to release. The fresh, fragrant, bugged demo is already prepared and is just waiting for the official announcement of the premiere. Remember to react enthusiastically, because the game is quite sad. Welcome it with joy and encouragement. We are porting Human Farm to Unreal Engine 5 because we can. This is a game with the greatest commercial potential, so it will be in development for many months, so that some grumpy person doesn't write a red review again because they clicked something wrong.Read full article on Community Announcements (Mim)AnnouncementsOfficial
Morbid Sales
https://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/35280558/43d05b3131376209970462d45f9caa1040b309d1.png Hi, I'd like to make a statement ːmarryː. Well, there is a sale going on. You can buy the entire set of our first three paid games for a few bucks. https://store.steampowered.com/bundle/23420/Demontada_Starter/ Yes, this is really happening and it will be happening one more day. Perfect opportunity to add something to your pile of shame ːgeorgesmileː.Read full article on Community Announcements (Mim)AnnouncementsOfficial
Priest Master
https://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/35280558/a63f0bdf83f4b065dff3e4a7079225083200fa98.png Hello, fanatics. I would like to announce that we are working on a bridge between Priest Simulator and Booze Master. This means that as soon as we're done with the former and before the release of the latter, you're gonna experience a short winter adventure, meeting characters you already know. It's gonna be something like Heavy Duty, but more unique. You will be able to experience the adventure together with Quella, Jerry and Mortimer. We will officially announce the game when we have a Steam page prepared. Ahoy!Read full article on Community Announcements (Yod)






