With the Marvel Tōkon: Fighting Souls open beta now underway, I wanted to see how the upcoming fighting game would run on my Legion Go 2. So, I downloaded the beta, fired it up through SteamOS and prepared to jump online. Instead, I ran into an issue before the game could even start.
It appears that Marvel Tōkon: Fighting Souls requires Easy Anti-Cheat, which can create compatibility issues for Linux gaming. When attempting to launch the beta through Proton, the game instead displays the following message: “No anti-cheat module has been found for this game and platform.”
Unfortunately, this means that anyone using SteamOS, Bazzite, or another Linux-based operating system currently cannot play the open beta. That includes Steam Deck owners and players using Windows handhelds, such as the Legion Go or ROG Ally, with Bazzite installed.
Easy Anti-Cheat can work through Proton, but support must be enabled and configured by the game’s developer. It is not something players can simply force on themselves. Unless PlayStation and Arc System Works enable that support, Linux and SteamOS players will remain locked out.
There is still time for that to change. Marvel Tōkon: Fighting Souls is still in development, and the version available now is only an open beta. Hopefully, PlayStation and Arc System Works will enable Proton support before the full game launches on August 6, 2026.
The ball is in your court, PlayStation and Arc System Works. Please make the right choice.
