Quite an underrated blast from past. Yeah, it is much more colorful and cartoonish comparing The First Encounter and The Second Encounter but in a good way. After playing those 2 games countless hours, it is refreshing to play something slightly different.There exists an old unofficial Linux port which works fine if you're into Single Player and/or LAN multiplayer (vs/coop);For Online multiplayer, Steam version is the way to go. To make the game more compatible with Proton/WINE on Linux, userenderer andsound API.Edit \Content\SeriousSam2\Sam2.ini.Locate the line gfx_iAPI = 2;.Replace with gfx_iAPI = 1;.Edit \Content\SeriousSam2\Sam2.ini.Locate the line sfx_iAPI = 2;.Replace with sfx_iAPI = 1;.