This is a list of Adventures of Sonic the Hedgehog episodes.
Trivia
The two engines on the two trains in the two episodes 'The Robotnik Express' and 'Full Tilt Tails' are two 4-4-0s or two American type steam locomotives, which were the most common wheel arrangements for steam trains, during the 1800s and 1830s on American railroads up to the year of 1928.
References
List of Adventures of Sonic the Hedgehog episodes Wikipedia(Text) CC BY-SA