How to Download Mark of Cain

1. Click on the Mark of Cain download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• Requires a 64-bit processor and operating system
  
• OS: Windows 10
  
• Processor: A CPU with at least one core
  
• Memory: 2 GB RAM
  
• Graphics: Something that can display pixels (Intel HD 3000 or better)
  
• DirectX: Version 10
  
• Network: Broadband Internet connection
  
• Storage: 500 MB available space
  
• Sound Card: DirectX compatible
  
• VR Support: Not supported
  
• Additional Notes: Runs on a potato. Tested on a microwave.

Recommended:

• Requires a 64-bit processor and operating system

Linux Requirements

Minimum:

• OS: I use Arch BTW!
  
• Processor: A CPU with at least one core
  
• Memory: 2 GB RAM
  
• Graphics: Something that can display pixels (Intel HD 3000 or better)
  
• Sound Card: DirectX compatible
  
• VR Support: Not supported
  
• Additional Notes: Runs on a potato. Tested on a microwave.

Recommended:

Mac Requirements

Minimum:

• OS: I dont know what apple has but that
  
• Processor: A CPU with at least one core
  
• Graphics: Something that can display pixels
  
• Additional Notes: Just get a real PC

Recommended:

Mark of Cain is a cursed, fast-paced retro FPS where you’re immortal, hunted, and mocked by meme-fueled demons. No seasons, no BS just blood, jokes, and pure arena chaos. Solo dev btw

Mark of Cain

What FPS was meant to be: fast, brutal, and just a little bit cursed.

Mark of Cain is a retro-inspired 2.5D arena shooter in the blood-soaked spirit of Doom, Quake, and Ultrakill but with a twisted edge all its own.

Play as John Demonhunter, a demon-slaying Greek badass cursed by God Himself to suffer eternal life—and eternal combat.

After centuries of slaughter, John got cocky.

The big guy upstairs took offense and branded him with the Mark of Cain a glowing symbol of divine punishment that ensures he can never die… but also never rest. Now Devil, seeing a golden opportunity, unleashes wave after wave of hellspawn, meme-fueled bosses, and cursed chaos to make John's unkillable life a living nightmare.

Welcome to a world where every demon is an inside joke, every death is a punchline, and survival is just the setup for the next round of absurdity.

FEATURES

Classic Arena FPS Madness
5 weapon loadouts, secrets, blood and dopamine. Inspired by the best of the '90s but unshackled from nostalgia. Run, gun, bunny-hop, wall jump, and blast through dense enemies in tight, explosive maps.

Old-School Campaign Mode

Battle through the campaign inspired by Quake and Doom, featuring episodic content released for free as development progresses. Each episode expands the lore, introduces new enemies, and pushes John Demonhunter further into divine damnation.

Breakcore Soundtrack (Made by Me, Because Who Else Could Handle It?)

Rip and tear to an original breakcore soundtrack composed by the developer pure chaos, distortion, and adrenaline.

Making Fun of The Whole Genre
Face off against bosses that mock modern gaming, from the Ad Boss who spams you with unskippable ads every time you get hit, to the Tiny Flea who exists solely to shove you off ledges while insulting your skill.

4 Player Split-Screen in this Economy???? 
He is John Demonhunter, He is John Demonhunter, You are John Demonhunter, I'm John Demonhunter, are there any other John Demonhunters I should know about!?

In-Game Level Editor & Steam Workshop Support

Forge your own cursed arenas with the built-in level editor, then share them or suffer through others’ twisted creations on the Steam Workshop. Build it, break it, or get obliterated by it.

Too Much For Zblock
Wall-jumps, air-dashes, slide-kicks, and zero mercy. Speed is survival. Master the movement system or get steamrolled.

No AAAAA BS
No battle passes. No season. No dlc.

Free rewards !!!!

Cursed Humor. No Apologies.
Meta jokes, meme enemies, bizarre dialogue, and zero fourth wall. It’s a fever dream of classic FPS chaos with a knowing smirk and a middle finger raised skyward.

“I Played myself”
John Demonhunter