Mortal Sin, developed by Nikola Todorovic, has reached 1.0 on Steam, moving out of early access and adding a true final boss plus several gameplay changes. The launch is significant because it introduces full Spanish and French translations, revamped player animations, weapon updates, and a more apparent endgame for runs.
The game pairs striking art direction with relentless melee combat, and the core loop remains familiar to fans of roguelike dungeon crawlers. Players chain combos to charge finishers while dealing with procedurally generated levels and enemy encounters. Combat keeps close-range chaos at its center, and classes range from a classic Berserker to a gun-wielding Pirate. Backgrounds and presentation lean into a distinctive aesthetic rather than realistic visuals, which complements the gameplay rhythm.
Version 1.0 introduces a new rare portal encounter featuring Calistra, a witch with unique lore, dialogue, and powerful items for sale. Most prominently, the update features a true final boss to provide a satisfying ending to long runs. Every player animation has been redone to capture a more aggressive melee feel, and several weapons received new attacks, for example, the scythe can be thrown like a boomerang. Classes have been rebalanced, and pacing has been adjusted to improve combat flow.
Beyond those changes, the release also adds complete Spanish and French localisation, a slate of bug fixes, quality-of-life features, and visual and audio tweaks. Player numbers hit records at launch, according to SteamDB. Mortal Sin is available on Steam now for $19.99 / £16.79, and the purchase page is available on the Steam store page.
A short trailer is available for those who want a quick look:
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