Mortal Sin Review

Combat: Skill Is Power

Mortal Sin's combat is its greatest strength. The game is described as a chaotic, blood-soaked roguelike where "skill is power, and overconfidence is death." This isn't marketing fluff — the combat system demands genuine mastery. Parrying at the right moment triggers invincibility and sets up whirlwind counter-attacks. Combo chains reward aggressive, skilled play with gold, potion essence, and invincibility frames.

The variety of weapons — from greatswords and spears to guns, claws, and magic — means each class feels distinct. Power Strikes deal double damage, Critical Strikes scale with Luck, and the Whirlwind spin attack is endlessly satisfying. PC Gamer called it "a must-buy, even in early access," and the combat alone justifies that praise.

Visuals: Beautiful Comic-Book Style

Mortal Sin features a striking comic-book visual style that sets it apart from other first-person action games. The stylized art direction gives every encounter a visceral, graphic-novel quality. TheGamer praised the game for its "extremely unique art style," and it's one of the first things new players notice.

The visual design extends beyond aesthetics — it communicates gameplay information clearly. Enemy telegraphs, combo timing windows, and critical hit indicators are all rendered in the comic-book style, creating a cohesive visual language that enhances gameplay clarity.

Content Depth: 16 Classes and 55+ Skills

With 16 playable classes, 55+ skills, dozens of unique enemies, and hundreds of handcrafted rooms, Mortal Sin offers enormous content depth. Each class has unique abilities, weapons, and playstyles. The skill system includes passives like Berserker Rage, Blood Magic, Chain Strike, and Singularity, allowing for deep build customization.

The game also features secret platforming zones, randomly generated quests, multiple color palettes, and infinite runs. Six distinct areas — Dungeon, Cave, Forest, Vessel, Trial of Resolve, and Maw of Sin — each with their own enemies and bosses, provide varied progression. The 47 Steam Achievements give completionists plenty to chase.

Replayability: A True Roguelike

As a roguelike with procedural generation, Mortal Sin offers effectively infinite replayability. Each run generates new room layouts, enemy placements, and quest opportunities. The Sin Level system means your character grows stronger within each run, creating a satisfying power curve from zero to hero.

The area progression system — choosing 3 of 4 areas per run with completed areas locked — adds strategic depth to run planning. Milestones like Trial of Resolve A/B/C and Vessel C-5 unlock permanent bonuses that carry between runs. The final boss, Embodiment of Sin, requires specific preparation (Helena at level 8, three Trials of Resolve, three Oaths in a single run), giving long-term players a clear endgame goal.

Steam Reception and Community

Mortal Sin has over 5,566 total reviews on Steam, with English reviews sitting at 95% positive (Overwhelmingly Positive). Recent reviews are Mostly Positive (75% of 36). The game supports 10 languages including English, Russian, Simplified Chinese, French, Spanish, German, Japanese, Korean, Polish, and Portuguese-Brazil (interface only).

The developer, Nikola Todorovic, is active on YouTube and maintains an active Discord community. The game was in Early Access from March 2023 before its full 1.0 release in August 2025. The most recent update (June 2026) added 5 new languages and 8 new unique items, showing continued post-launch support.

System Requirements and Accessibility

Mortal Sin is remarkably accessible in terms of hardware. Minimum requirements are Windows 7+, Intel Core i5-2500K, 8GB RAM, GeForce GTX 670, DirectX 11, and just 3GB of storage. Recommended specs bump to Windows 10+, Intel Core i5-6600K, and GeForce GTX 1060. The game supports full controller support (Xbox), Steam Cloud, and Family Sharing.

Verdict

Mortal Sin is a must-play for fans of action roguelikes, first-person melee combat, and dark fantasy. The combat system is deep and rewarding, the art style is unique and striking, and the content depth ensures hundreds of hours of gameplay. At 95% positive reviews from over 4,570 English reviews, the community consensus is clear.

Whether you're a casual player looking for satisfying combat or a hardcore roguelike fan chasing endgame challenges, Mortal Sin delivers. The game is available on Steam and is developed by Nikola Todorovic.

Latest Updates in 2026

Mortal Sin has received several notable updates in 2026. The most recent update on June 26, 2026 added 5 new languages — German, Japanese, Korean, Polish, and Brazilian Portuguese — translated by passionate community players. The same update introduced 8 new unique items including Penitent's Bulwark, Spiteguard, Gambler's Grip, Carnage Grips, Surge Striders, Warpath Greaves, Reaper's Crown, and Predator's Visor, alongside balance changes and bug fixes (Steam community announcement).

Earlier in 2026, the "Remnants of Sin" update introduced a new Sin Remnants system featuring 40 remnants that appear on death or when continuing to the next round. Players pick one of three remnants that twist their next run, with remnants organized into defensive, offensive, and run-economy categories. The update also brought performance optimizations including blood pooling, projectile pooling, foliage, hit detection, and lighting improvements (Steam community announcement).

In a May 2026 Steam announcement, the developer shared that they are now working on a new project (their next game). Mortal Sin will continue to receive incremental improvements, console ports, and more localization, though no sweeping post-launch changes are planned. The game was also offered at 25% off as part of the announcement, and later at 32% off during the Steam Summer Sale — its biggest discount since launch (Steam community announcement).