Next I'll be looking at the sequel of the series, Sonic 2. Look at the review and tell me what you think!
Emerald Hill zone, is easy for a first zone, expected.
Chemical Plant zone is fair, but unlike Marble Zone, it does not have any unfair gimmicks.
Aquatic Ruin zone, yet again the underwater palace of what is the dreaded Labyrinth zone in Sonic 1. You can avoid being in water though. I'm happy about that.
Casino Night zone, the boss is super-hard but easy when you get to know it's pattern. Oh, and you can gamble for rings.
Hill Top zone, three words. Avoid. The. Lava. I think that's said better than I ever could say it.
Mystic Cave zone, you fall into pits and get hit by the cheapest enemies in the game possibly... the lightning bugs. Ooooooohhhh, the lightning bugs. They give me so much hate!!!! Er... anyway.
Oil Ocean zone, boss is hard, it's expected. Same as Casino Night zone. Know it's pattern, you can beat it easily.
Metropolis zone, the only zone with three acts. This isn't Sonic 1! You're gonna get your fur tied up with these badniks. It's hard, and long, you can make it though, if you know what you're doing.
Sky Chase zone, the zone that really *grinds your gears* (If you got the Family Guy reference, kudos to you.) if you don't know what the zone's about.
Wing Fortress zone, the only 1-act zone that can drive you nuts, like Sky Chase, if you don't know what you're doing, especially with the boss. Maybe it's just my patience that I lack on the boss. I don't know.
Death Egg zone, the final zone and the hardest. The final boss is crazily hard, but with practice (and level select cheats) you can finish him once and for all.
All-in-all, Sonic 2 is a great sequel, but barely not as good as Sonic 1.
Oh, and there's Super Sonic if you get the Chaos Emeralds.