Anyone know how I can add some of the DRM free content/games to the steam deck? Some games are sold but don’t have the steam deck icon. Neo geo games for one. Same goes for itch.io games.
If it's not a game you can redeem through Steam, then install through desktop mode and add it to your list of games in Steam (add non-steam game). That will let you access it through the normal Steam OS
I dunno but those games will be stored somewhere on your filesystem. It will probably show you where in your settings. Fine the .exe and right click it.
Lutris integrates with itch.io these days, I haven't used it extensively but it seems robust enough. It should also support your local DRM free games and whatnot.