Dragon Age: Inquisition is generally playable on the Steam Deck and Linux systems, but may require some tweaks or workarounds.

According to the search results:

• The game is listed as “Unsupported” on the Steam Deck, meaning it may not work perfectly out of the box[1][5]. However, many users report being able to run it successfully with some adjustments.

• To get it running smoothly, users recommend using the Proton Experimental compatibility layer and downloading community controller profiles[1]. This allows the game to recognize the Steam Deck controls properly.

• On Linux systems in general, the game can run via Proton or Wine, but may require tweaking settings or using community fixes[5]. The ProtonDB website rates it as “Gold” for Linux compatibility with some minor issues[1].

• Common issues reported include the game not launching initially, controller issues, and some performance hiccups during cutscenes[1][2]. But overall, with the right setup, many find it very playable.

So in summary, while not officially supported, Dragon Age: Inquisition can be made to run well on the Steam Deck and Linux through community efforts and compatibility layers like Proton[1][5]. Some tinkering may be required, but many users have had success getting this game running smoothly on these platforms.

Citations: [1] dragon age inquisition : r/SteamDeck - Reddit https://www.reddit.com/r/SteamDeck/comments/v7l29m/dragon_age_inquisition/?rdt=49908 [2] Face-Off: Dragon Age: Inquisition | Eurogamer.net https://www.eurogamer.net/digitalfoundry-2014-dragon-age-inquisition-face-off [3] Dragon Age: Inquisition - 10 Toughest Battles In The Game, Ranked https://screenrant.com/dragon-age-inquisition-toughest-battles-ranked/ [4] Mods & How to Install Them (2022) - Satisfactory - Steam Community https://steamcommunity.com/sharedfiles/filedetails/?id=2833737751 [5] Steam Deck Support / first few playtests | Shroud of the Avatar Forum https://www.shroudoftheavatar.com/forum/index.php