Forest green troikas interest you for loopers or lightning ? <| sep |> I just tried with the 26 so games I have installed and tested . Only a few were able to do it . The page that lists the DRM free games covered but a percentage of the titles . It ' s a lot more of a developer thing Paradox and Wadjet for example that want their games to run like that . They either opened up Steam or refused to open at all . No Shadow Warrior , Grim Dawn , Sonic Generations , New Vegas , Back to the Future , Broken Age , Castle of Illusion , Gunslinger , Dustforce , Absolution , Revengeance , Metro 2033 , Portal 2 only loads the intro videos then checks , Serious Sam 3 , Tales of Symponia , Terraria , Van Helsing crashes without it and just shows the starting image , The Whispered World , To The Moon , Trine , VesselYes Brothers , Gemini Rue , Quake 2 , Shadowrun , Book of Unwritten Tales , Titan Souls , 20 vs 6 Most seems to be a bit a bit of an exaggeration as far as my personal experience with all my titles is concerned . I usually try it out after installing them and MOST is nowhere near the mark .