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Mortal Sin cover art

Game · Nikola Todorovic

Mortal Sin

SteamEurope and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.
  • Steam Deck Verified

Mortal Sin is a chaotic, blood-soaked roguelike where skill is power, and overconfidence is death. Carve through procedurally generated nightmares with brutal melee and flashy, satisfying combos.

Before you buy

Redeem on
Steam clientPC: Windows. Needs a free Steam account.
Activates in
Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.Activates on accounts registered in the EU, EEA, Switzerland and the United Kingdom.Will not activate on accounts registered in North America, Asia, Latin America or Oceania.
You get
A digital activation keyStandard edition. No disc, no box.
Delivery
To your account and by emailDelivered to your account and by email once it is ready. Some orders get a short manual check first.

Trailers and screenshots

01 / 10 Trailer

Mortal Sin

Trailer 1 of 2

About this game

Eyes locked on your prey.

You kill without remorse.

After all… it’s either you or them.

Sentience fades. This moment is your release.

REWARDING MELEE COMBAT

Mortal Sin is built around fast, visceral melee combat where every strike matters. Chain slashes, bashes, and kicks into devastating finishers as limbs fly and blood paints the walls. Combat thrives on momentum: move fast, hit hard, and never give your enemies a chance to breathe.

ENDLESS REPLAYABILITY

Descend into a surreal, ever-shifting nightmare. Procedurally generated levels, randomized quests, and hundreds of hand-crafted rooms make every run feel fresh. Unlock a growing roster of distinct classes, from the greatsword-wielding Berserker to the gun-toting Pirate, each with their own playstyle and wild synergies.

SINFUL VISUALS

Dive into a bold, graphic novel-inspired world that’s as stylish as it is deadly. Prefer a different look? Mortal Sin now features multiple visual modes and color palettes. Your nightmare, your way.

KEY FEATURES

  • Brutal, skill-based melee with flashy, satisfying combos

  • Beautiful comic-book visuals, now fully customizable

  • Dozens of unique enemies that react to your every move

  • Over a dozen playable classes, each with their own weapons and abilities

  • A huge arsenal: greatswords, spears, guns, claws, and magic

  • Hundreds of handcrafted rooms across procedurally generated maps

  • Secret platforming zones with rare loot and hidden horrors

  • Randomly generated quests with powerful rewards

  • Multiple color palettes to match your vibe and mood

  • Infinite runs and future updates to keep the chaos going

Description, images and details are taken from this product's Steam page.

Details

Developer
Nikola Todorovic
Publisher
Nikola Todorovic
Released
29 Aug, 2025
Genres
Action, RPG, Indie
Runs on
Windows
Activates on
Steam client, Europe and UK
Interface
English, Russian, Simplified Chinese, French, Spanish - Spain, German, Japanese, Korean, Polish, Portuguese - Brazil
Controller
Full controller support
  • Single-player
  • Steam Achievements
  • Full controller support
  • Steam Cloud
  • Family Sharing

Frequent dismemberment of monsters, lots of blood. Morbid imagery such as dead bodies, bloody bones and other Dark Fantasy art.

System requirements

Windows

Mortal Sin system requirements on Windows
ComponentMinimumRecommended
OSMicrosoft Windows 7Microsoft Windows 10
ProcessorIntel Core i5-2500KIntel Core i5-6600K
Memory8 GB RAM8 GB RAM
GraphicsGeForce GTX 670GeForce GTX 1060
DirectXVersion 11Version 11
Storage3 GB available space3 GB available space

Activating it on Steam client

  1. Open the Steam client and sign in.
  2. Choose Games in the top menu, then Activate a Product on Steam.
  3. Paste the key and confirm. It appears in your library.

The key is listed for the Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom. region. Read how regions work before you buy.

Mortal Sin€26.22