I played with my old friend Dr T but it was kind of pointless. It was fun remembering how it all worked. The free version is an update from the one I had used so it was different.
But I found myself spending hours as I played Buggy boy and Tetrus. I have an old Microsoft joystick that also only runs on XP.
I wouldn't pay money for an old Atari as the Hard drive is probably dead or almost. Also the Floppy drives often failed. I remember paying $200 for a new Floppy drive! And all the parts are not the same as Apple or PC. Only the RAM.