Their FAQ says it's fine to play on a Steam Deck running Windows, and normally running it in Proton will just result in getting kicked, with bans only handed ou

Their FAQ says it's fine to play on a Steam Deck running Windows, and normally running it in Proton will just result in getting kicked, with bans only handed out if you actively try to get around that restriction. Their issue clearly isn't with the Steam Deck but with anti-cheat solutions being compromised when running inside Proton, and they're not the only developer which has taken that stance. > Destiny 2 is not supported for play on the Steam Deck or on any system utilizing Steam Play's Proton unless Windows is installed and running. Players who attempt to launch Destiny 2 on the Steam Deck through SteamOS or Proton will be unable to enter the game and will be returned to their game library after a short time. Players who are not accessing Destiny 2 through Windows and attempt to bypass the SteamOS/Proton incompatibility will be met with a game ban. https://help.bungie.net/hc/en-us/articles/360049024592-Destiny-2-Steam-Guide https://help.bungie.net/hc/en-us/articles/360049024592-Desti...