|Star Light Zone did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):|
Star Light Zone is a location in the Sonic series. It is originally from Sonic the Hedgehog and consequentially from Sonic Drift as well. Its purpose is to mislead; its design is that of a beautiful urban environment, with a purpose to test Sonic's speed. Stardust Speedway of Sonic CD, Speed Highway of Sonic Adventure and Sonic Generations and Starlight Carnival of Sonic Colors are based on this zone. Scratch and Grounder were locked into this zone at the end of Adventures of Sonic the Hedgehog.
Star Light Zone makes another appearance in Sonic Heroes 2. Here, it has been renovated slightly; its almost exclusive inhabitants, the Babylon Five, decided that its design, as of immediately before its renovation, was unsatisfactory and so they decided to change it; in doing so, they unlocked Scratch and Grounder, which is why they are incredibly acerbic when they make a lot of noise in their home, Electric Egg Zone (it's adjacent to, but inaccessible by, Scrap Brain Zone.
Owing to the level being both nocturnal and urban, Star Light Zone has garnered comparisons with Gigalopolis.