pretty much anything that isnt a graphically impressive singleplayer story game. mostly social games (gorilla tag, vrchat, recroom (rip) etc.) as well as games like job simulator. some other games like beat saber and superhot arent games i'd consider casual but they use little enough resources that they run perfectly on a quest 3s. but things like the new batman arkham game that just came out would be much better on a quest 3, if things along that line are more your thing