With JenKat, you have to OK for the game and then "decline" about 5 "offers" to get the game. You get NO choice as to where it is installed. It's an odd install, It puts part on Program Files and part on ProgramData. I move the 2 together ELSEWHERE and then re-create the shortcuts. I currently have 22 games from Jenkat (I may have more but from elsewhere) and none with toolbars or anything like that. It's just the "declines" that get tiresom and the moving of the game.
I don't let anybody install to Program Files if I can avoid it and then try to do as I do here - MOVE IT. With Vista, security can be a royal pain using Program Files.
The one thing you have to watch for. Occasionally the number of games goes up but the newest game doesn't seem that new. It appears that they "release" another game they've had for some time as free so it shows as much older. I just sort by name and look for the "extra" and update my list accordingly.