Mark of Cain

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

At a glance

• Platform: Windows, Linux.
• Genres: Action, Casual, Indie.
• Release date: Mar 3, 2026.
• Steam user reviews: Mostly Positive (75% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

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