Alternate Reality

Alternate realities are versions of the original timeline where one key part of the past went down differently. They can be created through Gideon‘s Magical Contracts.

Known alternate realities
In Thomas: Gordon Returns, Gordon was tricked into signing away the day he was born. Thus, he was taken to an alternate reality where he never existed and Gideon rules The Island of Sodor. The only way to get out of it is through a hug, which he succeeds in completing.

Differences

 * The key difference is that Gordon never existed.