Sonic Adventure 2 for Dreamcast
Sonic Adventure sought to bring the speedy blue streak into the modern era, with a grander emphasis on story and more varied gameplay. It's immediate follow up, Sonic Adventure 2, followed on in some interesting ways; though multiple play styles exist, the number of them has been reduced to three, and the number of campaigns has been reduced to two- one for the Heroes, one for the Villains- which cycles through the playable characters per-stage. The story, however, sought to tackle slightly heavier themes then any Sonic game before it, with themes of loss, revenge, and the ties that bind us taking heavy precedence in the narrative. This one decision alone would lead to a fracture amongst the fan base that would persists for years to come and would invite mockery from the outside, but most people agree that of all the Sonic's to approach edgy subject matter, this game did it the best. Heavily celebrated at the time, Sonic Adventure 2 has been reappraised and revisited many times over in the years that have followed, but remains a cult favourite none the less.
Also, the Chao Garden was never better then it was here. That's not an opinion, that is a fact.