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.

Public builds
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Counted once we have watched for 90 days (since 21 Oct 2026)
Distinct builds deployed to a game's public (default) Steam branch, as Steam's client network describes them.
Checked within minutes of each Steam change. Observed since 21 Oct 2026.
Source: Steam client network (PICS), App info, public branch. Full methodology
Latest public build
Build 23900960
Update posts
1 postsPosts announcing an update, tagged or not
Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.
Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology
Typical gap between builds
Not enough builds yet| Build | Went live | Patch notes |
|---|---|---|
| 23900960 | None posted |
From Steam’s client network, last checked . Builds before 21 Oct 2026, when we started watching, aren't listed. Patch notes are the developer’s update post from an hour before to a day after the build. Not every build gets one. How we count
| Posted | Update |
|---|---|
| 18 Dec 2025 | Final Boss Flow Update Update |
| 27 Oct 2025 | Remnants of Sin Update Update |
| 29 Sept 2025 | Skins of Sin Update Update |
| 1 Sept 2025 | Hotfixes 8/31 Patch notes |
| 29 Aug 2025 | Mortal Sin – Version 1.0 Release Update |
| 1 Aug 2025 |
| Keeping Up The Momentum Patch notes |
| 25 Jul 2025 | Unique Items, Loot Overhaul, Accessibility Update Update |
| 18 Jul 2025 | Major Class Overhaul + New Combos Update Update |
| 28 Jun 2025 | The Oathbound Update Update |
| 20 Jun 2025 | Quest Update Part I Update |
| 31 May 2025 | Hunter Class Update and Combat Tutorial Update |
| 20 May 2025 | Localization Update: Chinese and Russian Language Support! Update |
| 26 Apr 2025 | New Light, New Fight: Realistic Visual Update Update |
| 10 Apr 2025 | Major Pirate Update: New Class, New Area, Guns! Update |
| 6 Mar 2025 | New Skills, New Curses, Vampire / Hunter buffs, Cave Art Update! Patch notes |
| 25 Feb 2025 | Skill Update Addendum - No More Breaking! Patch notes |
| 23 Feb 2025 | Major Skill And Item Update Update |
| 15 Nov 2024 | Class / Balance Update, New Color Palette! Update |
| 30 Oct 2024 | Enemy Update Hotfix #2 Patch notes |
| 28 Oct 2024 | Enemy Update Hotfix Patch notes |
| 27 Oct 2024 | Major Enemy Update Update |
| 20 Jul 2024 | Wall Clipping Fix Update Patch notes |
| 7 Jul 2024 | Mortal Polish Update: New Combo System, Sin Tokens, Cave Rework, and more! Update |
| 12 May 2024 | Major Level Update Update |
| 15 Feb 2024 | 2/15 Optimization Hotfix Patch notes |
| 10 Feb 2024 | Combo Icons / Berserker and Duelist Buffs / Bug Fixes Patch notes |
| 1 Feb 2024 | Secret Portal Room Update: 60 new levels! Update |
| 14 Nov 2023 | Combo Shuffle Update Update |
| 26 Oct 2023 | 10/26 Hotfix - Immortal Construct adjustment / bug fixes Patch notes |
| 25 Oct 2023 | Halloween Update: Immortal Construct Update |
| 16 Oct 2023 | Art Update Addendum / Ultrawide Support! Update |
| 6 Oct 2023 | Major Art Update Update |
| 21 Aug 2023 | 8/20 Combat Tweaks Patch notes |
| 16 Aug 2023 | Major Combat Update Update |
| 14 Jul 2023 | 7/13 minor bug fixes Patch notes |
| 29 Jun 2023 | Major Class Update - New Special Abilities Update |
| 22 May 2023 | 5/21 Content Update! New class: Enigma, 6 new arena areas added Update |
| 16 May 2023 | 5/15 bug fixes Patch notes |
| 10 May 2023 | Questing Content Update - Helena's Awakening Update |
| 3 May 2023 | 5/2 Hotfix Patch notes |
| 29 Apr 2023 | 4/29 Content and Balance patch! Update |
| 23 Apr 2023 | Content Update! Color Palettes, New Class: Hoarder Update |
| 15 Apr 2023 | Content Update! Added Scythe Weapon, Stalker Class, Dual Cleavers and more! Patch notes |
| 11 Apr 2023 | Added Saving Run Progress Patch notes |
| 5 Apr 2023 | Balance changes and bug fixes Patch notes |
| 1 Apr 2023 | 4/1 new class added, Gladiator! Patch notes |
| 29 Mar 2023 | 3/28 Vampire class buff, other tweaks! Patch notes |
| 27 Mar 2023 | 3/26 minor content and many bug fixes Patch notes |
| 24 Mar 2023 | 3/23 hotfix Patch notes |
| 23 Mar 2023 | 3/22 Content Update! New class, scare invulnerability items! Patch notes |
Showing the latest 50 of 52. Show all
Steam keeps no record of past build numbers, so before 21 Oct 2026 a game’s update history comes from its own Steam news: posts tagged as patch notes, and untagged posts that plainly announce a patch or a released update. Older posts are still being read in, most played games first. How we count