PCGame

Mortal Sin

First-person dungeon crawler with fast melee combos and changing levels

Nikola Todorovic · Released Aug 29, 2025

ActionIndieRPG

Reviews
Very Positive
94% of 5,853
Recent reviews
Mixed
59% of 22 in 30 days
Players
11
daily peak, Nov 7, 2026
Steam Deck
Verified
Last update on Steam
4 months ago
Jun 24, 2026
Minimum PC
GeForce GTX 670
8 GB RAM · 3 GB disk
Full requirements

What is Mortal Sin?

Mortal Sin is a first-person action roguelike set in a surreal, dark-fantasy nightmare. You fight through procedurally generated dungeons, chain melee attacks, take on randomized quests, and unlock classes with different weapons and abilities for later runs.

For you if...

  • +you like fast melee combat and chaining attacks
  • +you want repeatable dungeon runs with changing layouts
  • +you enjoy trying classes with different weapons and abilities

Not for you if...

  • −you dislike memorizing and entering combat combos
  • −you want levels with fixed layouts and quests
  • −you prefer slower combat to fighting hordes of enemies

What players say

94% of 5,853 reviews are positive · 59% of 22 in the last 30 days

Players praise the fast, bloody combat, distinct classes, and visual style. The most common complaints are awkward combo inputs and repetitive runs; some longtime players dislike changes to the combat system.

Players over time

▼ -60% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 25 players on Oct 15, 2026.

Show the data
DayPlayers
Nov 7, 202611
Nov 6, 20265
Nov 5, 20262
Nov 4, 20265
Nov 3, 20266
Nov 2, 20266
Nov 1, 202611
Oct 31, 20268
Oct 30, 20266
Oct 29, 20266
Oct 28, 202613
Oct 26, 202614
Oct 25, 202615
Oct 24, 20266
Oct 23, 202618
Oct 22, 202615
Oct 21, 202613
Oct 20, 202618
Oct 18, 202621
Oct 17, 202619
Oct 16, 202618
Oct 15, 202625
Oct 14, 202617
Oct 13, 202618
Oct 11, 202617
Oct 10, 202612
Oct 9, 202615
Oct 8, 202614
Oct 7, 202614
Oct 6, 202619
Oct 4, 202624
Oct 3, 202618
Oct 2, 202620
Oct 1, 202610
Sep 30, 202611
Sep 29, 20267
Sep 27, 202617
Sep 26, 202614
Sep 25, 20266
Sep 24, 202610
Sep 23, 20263
Sep 23, 202614
Sep 22, 202617
Sep 21, 202613

How many players finish Mortal Sin?

14% of Steam players have unlocked «Absolution», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Mortal Sin screenshot 1

Mortal Sin system requirements

Minimum: GeForce GTX 670, 8 GB RAM, 3 GB of disk space.

As published by the developer.

Can my PC run Mortal Sin?

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

Set up my PC →

Minimum

OS
Microsoft Windows 7
Processor
Intel Core i5-2500K
Graphics
GeForce GTX 670
Memory
8 GB RAM
Storage
3 GB available space
DirectX
Version 11

Recommended

OS
Microsoft Windows 10
Processor
Intel Core i5-6600K
Graphics
GeForce GTX 1060
Memory
8 GB RAM
Storage
3 GB available space
DirectX
Version 11

Does Mortal Sin have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Mortal Sin run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

  • All functionality is accessible with the default controller configuration
  • Shows Steam Deck controller icons
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Full controller support
Platforms
Windows
Achievements
47
Steam features
Cloud saves, Family Sharing
Languages
Text only: English, Russian, Simplified Chinese, French, Spanish - Spain, German, Japanese, Korean, Polish, Portuguese - Brazil.

Does Mortal Sin 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 25, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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