/vr/ - Retro Games

Because basically, Sonic has to go back to the past to fix the mess that has been done there otherwise his present will inevitably head towards an apolocalyptic world. But if he doesn't do, the future will always automatically become dark.

Which basically have for message in real life:
The cannon timeline is that the future is meant for our world to be destroyed, and no matter what we do now, we are doomed and the only way to prevent this is to go back to the past to take out the X factor that will make this future not happening, which it's impossible because no one can go back in time.