I used 2.x more than anything else back in the day. But I was primarily running production type stuff like graphics, music, toaster with some games. 1.3 was just too rough to stare at all day and I never recall compatibility issues with games. But then maybe I just didn't play enough different ones to run in to problems. I still have a 2000 and 3000 running 2.x while I have another 2000 and 4000 running 3.x
Plaz