The first thing you're going to need for any true Sonic experience is a set of Sonic characters, of course. This mod by DutyCraft includes everything you could ask for. It's got Sonic, naturally, along with a slew of additional characters, from Amy Rose to Rouge the Bat, Shadow, Super Sonic, and more. Best of all, it also comes with items like Rings and Chaos Emeralds to help give you even more options with which to expand your creativity. You can get it here.