Pretty much lol but that second level with the blue goo in the pipes is awful :P and the fipping tiles. Ugh. I got past it eventually, but for a seven/eight-year-old, it was pretty hard :(
Oh, goodie. I like doing the ring challenges for those in Sonic on Genesis :P best years of my life, or the bird-background flipping thing where you can't fall into the red holes :( and you're flung off the walls and have to hit around the emerald before you can break into it and obtain it. So tricky! but so fun..