BetaLeaf: that's the problem; most games are played using keyboard and mouse

preketeque: we have another feature, called approved apps. You need to approve only the game you want to play, and run it in boarderless windowed mode. When you minimize the game, they will be unable to see or click anything.

James Stringer: yes, I already try approve apps feature; but you need to open those apps all the time. I just want friends/family could play any game, anytime; but protect host setting from any changes.

preketeque: Why not just set steam as an approved app, as well as any games they can launch from steam. This way, they can launch the games they want from steam, without being able to change your settings. Also, if you are going to give people access to your computer in an unmonitored manner, you really should be able to trust that they won't touch your security settings.