Tainted Grail: The Fall of Avalon

Developer: Questline
Publisher: Awaken Realms
Released: May 23, 2025
Steam reviews: 88% of players recommend it, from 35,952 reviews — Steam calls that “Very Positive”
Tags: ActionAdventureIndie

View on Steam

On Linux, Steam Deck and Steam Machine

Proton: PlatinumDeck VerifiedSteam Machine: VerifiedSteamOS Compatible

This game runs perfectly out of the box under Proton, per ProtonDB reports (89 reports). Valve rates it Deck Verified.

Valve rates it Verified 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

Check my library

See this for every game you own. Paste a Steam profile: no account, nothing to install.

Where to buy

Steam

Buy on Steam

Compare elsewhere:GOG ↗Epic ↗

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
Steam Trading Cards
DualShock Controller Support
DualSense Controller Support
Steam Cloud
Family Sharing

From the game's Steam store page.

Languages

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

Steam lists 12 languages, 1 with full audio.

Age rating & content

DEJUS 14 · Linguagem imprópria Nudez ViolênciaThe rating board's own rating, as Steam relays it
IGRS BANNED · 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
This is a dark fantasy game, you can expect combat with blood and moderate brutality and some dark tropes in storyline.The developer's note on the content, from Steam

Every game you own, in one library

Steam, Xbox, Epic, GOG, itch.io, Amazon and PlayStation, plus your installed EA, Ubisoft, Battle.net and Riot games. Free.

About this game

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

Welcome to Tainted Grail: The Fall of Avalon

Step into the world of Tainted Grail: The Fall of Avalon, a mature, first-person perspective open-world RPG that immerses you in a dark fantasy realm inspired by Arthurian legends.

Uncover a complex and branching main storyline that lets you shape the legacy of King Arthur’s reign, 600 years after his fall amidst unending strife.

This game is a love letter to open-world FPP RPGs.

Key features

Massive gameplay experience: Dive into 50-70 hours of rich content spanning three expansive zones.
Branching narrative: Engage with a complex main story and hundreds of side quests featuring remarkable, voiced characters.
Limitless playstyles: Customize your gameplay with countless builds—mix attributes, skills, and gear to create your favorite setup.

Every corner of Avalon is packed with discoveries—hidden items, story secrets, unique enemies, dungeons, quests, and fascinating NPCs. Freely explore at your own pace and forge your path in a truly open world.

Switch seamlessly between melee weapons, shields, bows, magic, throwables, mixtures, and more. Dodge, parry, and block to protect yourself from danger. Experiment to develop your ultimate combat style against a wide variety of challenging enemies.

With all the stats, perks, equipment, and crafting, you can shape your playstyle exactly how you wish.

Want to be a crazy alchemist-berserker punching enemies to death? Sure. A mystical blacksmith-mage summoning undead hordes? We’ve got you covered. A stealthy archer lurking in the shadows? Say less—this is the game for stealth archer enthusiasts.

Experience three distinct zones, each packed with quests, NPCs, items, and more:

Misty Horns of the South
Sunlit Cuanacht Village

Frozen peaks of the Forlorn Swords

Avalon is alive with various supporting activities that enrich your journey. Participate in sketchbook journaling, fishing, farming, blacksmithing, alchemy, cooking, mining, managing your house, and more.

At night, the Wyrdness—a chaotic primordial force—descends upon the land, altering reality and introducing survival challenges. Your foes become even fiercer, leaving no place for mistakes or hesitation. Kill or be killed.

Confront morally ambiguous choices that will test your character and shape Avalon’s future. Follow the dark legacy of King Arthur Pendragon while engaging with over 250 NPCs and tackling 200+ side quests.