25: Sonic the Hedgehog 2
Developer: Sega Technical Institute
Format: Mega Drive
Anyway, Sonic 2 was arguably the defining point in Sonic’s evolution. Tails and the Tornado plane, a robot Sonic to fight, the first of many space stations of evil, a wider variety in Zone design, including the first casino level, a seventh Chaos Emerald, Super Sonic – all here. Also note the massive downhills in Chemical Plant Zone that really started to push the speed aspect of the game more firmly into the foreground. A mini-epic without speaking, only a couple of minor points in level design let it down. (It's worth pointing out that that YouTube video I just found to pop on the top here showed me a couple of bits of the Casino Night Zone that I didn't know about. This game is stuffed.)
MAGIC MOMENT: the terrifying Death Egg Zone.