It’s using PolyMC to launch multiple instances (depending on how many connected controllers there are) and automatically tile them. I would personally suggest using an optimized minecraft build like Fabulously Optimized to minimize any performance hit from having that many players.
the script makes various assumptions about the system ranging from
/home/deck is the users home dir, to kde plasma is the used desktop environment or can be launched from gamemode.
so probably not without tweaks ;)
Damn, I guess I’ll have to check it out and see if my caveman vibe coding skills can do the trick.