Board Thread:Questions and Answers/@comment-30300307-20170426071235/@comment-3005395-20170427222556

I like to think that every time a timeline is messed up it has in universe effects the changes the world.

Sonic CD has time travel ending in two different and diverging timelines.

Timeline 1 -> Sonic saves Little Planet & Amy. Sonic Adventure happens.

Timeline 2.-> Sonic fails, Amy dies. Sonic 4: Episode 1 & 2 happen

Sonic 06 has similar effects

Timeline 1 -> Sonic Unleashed happens

Timeline 2 -> Sonic Rivals?

Timeline 3 -> Sonic Riders: Zero Gravity

Sonic Generations' Effects -

Timeline 1 -> Sonic Lost World

Timeline 2 -> Sonic Forces