Sonic Generations Configuration Tool -

“We have to open the tool,” Tails said. “But it’s not a Chaos Emerald. It’s a command-line interface. Someone has to enter the configuration space.”

Classic Sonic’s world had grown too slow, his spin dash lagging like a corrupted ROM. Modern Sonic’s world had become a blur of over-rendered gloss, his homing attack locking onto things that weren't there. Worse, zones were merging: the purple water of Hydrocity now bubbled up through the floors of Crisis City, and the G.U.N. trucks from City Escape chased you through the labyrinth of Labyrinth Zone. Sonic Generations Configuration Tool

When the light faded, Sonic was standing in Green Hill Zone—the real one, not the paradox version. Classic Sonic stood a few feet away, looking up at the same perfect blue sky. “We have to open the tool,” Tails said