The first Sonic is a classic that I had an absolute blast playing back in the day until I got stuck at Labrynth Zone and never saw past that point upon each replay. Today as an adult replaying the game, I was able to see the whole game through without much trouble. Sonic 1 is one of those games you can replay again and again for years and not get sick of it. Although while Sega found it's stride here, there were still a lot of shortcomings like the spindash not being yet discovered, and the absolutely infuriating level design at some points. Both points would be addressed in it's Sequel. Still, Sonic 1 is always fun to just pick up and play, and nothing is more iconic than zooming through Green Hill Zone over and over again.