Highly suggest looking into mods for it. The sonic autists picked it apart pretty thoroughly and there's fixes for a lot of the jank plus a bunch of really dumb/funny character swaps.It isn't exactly free, but, Sonic Generations it's 95% off on Steam for the next 12 hours
just got it for less than a dollar, so i can't complain
Think all of the Sega stuff is until the 9th, was really pissed off myself on something else, a Warhammer franchise game that I didn't own, because one I was missing was £0.80, (90%) but went up to £3.99 this morning (50%) and I still hadn't worked out what I wanted and had only got my cart up to £27 at the time so thought all of them were til the 9th...Looks like they've extended that Sega deal to the 9th. Picked up Generations and All-Stars Racing Transformed for $6 total, and might get Sonic Adventure ($1.19).