This video showcases the few out of many I liked. I also used Cyber space at night mod to make the cyber spaces occur at night.
Mods:
Shadow the hedgehog made by mastaklo: https://gamebanana.com/mods/416642
Cream the rabbit made by Kanzukiryu: https://gamebanana.com/mods/512402
Rouge the bat made by Kanzukiryu:
https://gamebanana.com/mods/512401
Cyber space at night made by Robowil:
https://gamebanana.com/mods/422131
Emerald Coast made by charcoall
https://gamebanana.com/mods/496615
Fallen Fleet made by CleverChao
https://gamebanana.com/mods/493906
Final Egg made by Sage Central (Shaun)
https://gamebanana.com/mods/498173
Grand Metropolis made by eXe08
https://gamebanana.com/mods/495640
Gun Fortress made by ShawnGuku
https://gamebanana.com/mods/503788
Hot Shelter made by SuperSonicJR
https://gamebanana.com/mods/501948
Mazuri Boss Fight made by ecksdii42
https://gamebanana.com/mods/512328
Metal Harbor made by DonArceus
https://gamebanana.com/mods/507304
Power Plant made by eXe08
https://gamebanana.com/mods/500073
Pumpkin Hill made by InvalidFile
https://gamebanana.com/mods/512238
Radical Highway made by SuperSonicJR
https://gamebanana.com/mods/520235
Red Mountain made by SuperSonicJR
https://gamebanana.com/mods/497092
Red Mountain Act 2 made by Sage Central (Shaun)
https://gamebanana.com/mods/497331
Sky Deck made by SuperSonicJR uPic
https://gamebanana.com/mods/498455
Twinkle Park made by lightningWyvern
https://gamebanana.com/mods/481727
Westopolis made by ShawnGuku
https://gamebanana.com/mods/482932
source
Its amazing to see what the sonic modding community can do with the games.