Best buy'a all in one pc's?

Can Best Buys all in one computers run games (8 gb mem) like minecraft, cod, terraria, steam, so on, smoothly withOUT lag and buffering? And it might not work well but how about skyrim, elder scrolles games? Those are hard for consols too so I'm not sure…

Best buy have never made a PC before. There's no way we can know what PCs you are talking about and their qualities (what games they can run) if you haven't stated the name and model of the specific all in one PCs you are talking about.