Mortal Shell II

Developer: Cold Symmetry
Publisher: Playstack
Released: Aug 20, 2026
Steam reviews: 79% of players recommend it, from 21,608 reviews — Steam calls that “Mostly Positive”
Tags: ActionRPG

On Linux, Steam Deck and Steam Machine

Proton: GoldDeck PlayableSteam Machine: PlayableSteamOS Compatible

This game runs great under Proton after tweaks, per ProtonDB reports (47 reports). Valve rates it Playable on Steam Deck.

Valve rates it Playable on Steam Machine. Valve marks it SteamOS Compatible.

Proton tier: ProtonDB · Deck rating: Valve · Steam Machine, Steam Frame and SteamOS ratings: Valve · Compare 2,053 games · Every game Valve rated for Steam Machine

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Where to buy

Steam

Buy on Steam

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Free demo

Steam lists a free demo for this game.

The demo on Steam ↗

What owning this involves

Cloud saves · The store backs this game's saves up. That cover ends if your account does.From the store listing

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

Features

Full controller support

Single-player
Steam Achievements
Full controller support
Adjustable Text Size
#category_contrast_controls
Custom Volume Controls
Playable without Timed Input
DualShock Controller Support
DualSense Controller Support
Stereo Sound
Subtitle Options
Steam Cloud
Family Sharing

From the game's Steam store page.

Languages

English · full audio
French
Italian
German
Spanish - Spain
Japanese
Polish
Portuguese - Brazil
Portuguese - Portugal
Russian
Simplified Chinese
Spanish - Latin America
Traditional Chinese
Korean
Ukrainian

Steam lists 15 languages, 1 with full audio.

Age rating & content

17+Steam's age gate for this game
ESRB M · Blood and Gore Intense ViolenceThe rating board's own rating, as Steam relays it
PEGI 18 · Extreme ViolenceThe rating board's own rating, as Steam relays it
USK 18 · Horror Explicit ViolenceThe rating board's own rating, as Steam relays it
DEJUS 14 · Linguagem imprópria ViolênciaThe rating board's own rating, as Steam relays it
IGRS 18 · Kekerasan Horor Rokok dan/atau rokok elektronik, minuman beralkohol, narkotika, psikotropika, dan/atau zat adiktif lainnyaThe rating board's own rating, as Steam relays it
Frequent Violence or Gore · General Mature ContentSteam's content descriptors, as the developer answered them
Mortal Shell II contains violence including sword fights with blood sprays, execution maneuvers, and medieval firearms.The developer's note on the content, from Steam

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About this game

The developer's description, from the game's Steam store page.

Mortal Shell II is a standalone sequel to Mortal Shell that significantly expands on the original with unrestricted, adrenaline-charged combat, extensive weapon upgrades, and free exploration.

The forgotten Shells of eight lost warriors are scattered throughout Mortal Shell II’s ravaged world. Seek and possess these Shells, unleash their innate abilities, and discover the story of each by unravelling their secrets.

Mortal Shell II offers a clean, agile and grounded combat system, with options to think strategically about upgrading melee and ranged weapons.

Unrestricted by stamina, players exploit multiple tactics to shatter enemy posture and strike critically.

Mortal Shell II’s open world is compact, tightly interconnected and immersive. It is designed with respect for the player's time.

Those who wander from the golden path can discover new Shells, weaponry, upgrades, curiosities and more.

System requirements

As Steam lists them.

Windows

Minimum

OS: Windows 10 / 11
Processor: Intel Core i7-10700K @ 3.8 GHz or better or AMD Ryzen 5 3600 @ 3.6 GHz or better
Graphics: NVIDIA GeForce RTX 2060 SUPER 8 GB or AMD Radeon RX 6600 8 GB
Additional Notes: SSD required