How to Add Non-Steam Games to Steam Deck
For most games, you can use Proton. Go into desktop mode, add your non-Steam game, right-click it, and select 'Force the use of a specific Steam Play compatibility tool'. Pick Proton and you're good to go!
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You can add non-Steam games by switching your Steam Deck to desktop mode. Open Steam, click 'Games', then 'Add a Non-Steam Game'. Find the game's executable file and add it. Simple as that!
Easy peasy! Just open Steam in desktop mode on your Deck, click 'Games' in the top menu, then 'Add a Non-Steam Game to My Library'. Select the game exe from there and boom, done!
Why bother? Stick to Steam games for the best experience.
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