thanks to @AngelCWarrior @limbolowpo, @jhay_ru for the idea of ray city 
and some of the stuff in it.

@AngelCWarrior again for some of the artwork in Ray City
and also for creating the base concept for Sunset Nebula

cole and calibur for testing some of the maps in previous updates

RollingMitzy, yoshi, yuniki, ruberjig, munoken, DG-17, BlakeDood for the staft ghosts in versions before 2.4

@acheronmystikke for the ideas and concept for his track and artwork in the map
@acrtiscircle for the main song in the track

matioz for some ideas for Starry Nigth based on his version of starry night in srb2kart

JugadorXei for the custom sealed star lua

the Cosmic Lounge server for helping me find some weird interaction in multiplayer and general testing
(they're peak)