Moss: The Forgotten Relic

Developer: Polyarc, Blackbird Interactive
Released: Jul 16, 2026
Steam reviews: 91% of players recommend it, from 431 reviews — Steam calls that “Very Positive”
Tags: ActionAdventureIndie

On Linux, Steam Deck, Steam Machine and Steam Frame

Deck VerifiedSteam Machine: VerifiedSteam Frame: VerifiedSteamOS Compatible

Valve rates it Deck Verified. Valve rates it Verified on Steam Machine. Valve rates it Verified on Steam Frame. Valve marks it SteamOS Compatible.

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Where to buy

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
Multi-player
Co-op
Shared/Split Screen Co-op
Shared/Split Screen
Steam Achievements
Full controller support
Gamepad Recommended
DualShock Controller Support
DualSense Controller Support
Steam Input API Support
Steam Cloud
Remote Play on TV
Remote Play Together
Family Sharing

From the game's Steam store page.

Languages

English · full audio
French · full audio
Italian
German · full audio
Spanish - Spain
Japanese · full audio
Korean
Simplified Chinese · full audio
Traditional Chinese · full audio
Portuguese - Brazil

Steam lists 10 languages, 6 with full audio.

Age rating & content

DEJUS 6 · Violência fantasiosaThe rating board's own rating, as Steam relays it
IGRS 13 · KekerasanThe rating board's own rating, as Steam relays it

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About this game

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

Journey through the pages of a living fable.

Moss: The Forgotten Relic is an emotional and atmospheric adventure set in the pages of a living storybook, brimming with myth and ancient magic. Guide a tiny but determined hero on a heartfelt journey of challenge, courage, and connection.

Traverse a fallen kingdom, solve environmental puzzles woven into the landscape, and embark on a timeless adventure…

Moss: The Forgotten Relic unites the beloved and critically-acclaimed Moss and Moss: Book II into a definitive singular adventure, beautifully enhanced and reimagined for its debut on PC.

Explore a Fallen Kingdom

Venture through a mythic land marked by the ruins of a ancient realm slowly being reclaimed by an enduring and untamed nature.

Guide an Unlikely Hero

Form a powerful bond with Quill, a small and courageous mouse who looks to you for guidance, protection, and trust at every step of her journey.

Embark on a Timeless Tale

Uncover hidden secrets, navigate puzzling places, and confront arcane forces in an intimate and epic fable inspired by classic fantasy adventures.

Optional Local Co-Op

Play together as Quill and the Reader, each using a separate controller

Additional Features

Explore a fallen kingdom slowly reclaimed by nature
Guide a tiny hero through mysterious places and towering dangers
Solve handcrafted, diorama-like environmental puzzles
Discover hidden secrets and surprises off the beaten path
Face arcane threats with optional “skip combat” accessibility
Uncover the epic and heartfelt tale of a hero who needs you
Thoughtfully designed and lovingly crafted by a small team
Critically acclaimed with over 160 awards and nominations
Orchestral soundtrack by acclaimed composer Jason Graves

Reimagined as the Definitive Adventure

Moss: The Forgotten Relic brings Moss and Moss: Book II together as one complete, enhanced experience debuting on PC first time. New features include: