These are the current selection of Co-Creation concepts that were not accepted in voting seasons like Season 1 and Season 2/Summer Tournament, but instead selected directly by officials via Facebook/E-Mail submission.

There are 5 concepts so far that were accepted in this manner: Melodic Metropolis, Heartbreak, Radiant Shadow, Trailblaze, and City of Tomorrow.

Do note that the images were not the finalized ones, i.e. these are the first draft and some of them have since undergone amendments.

All concepts have sub-pages where you may view the full concept. The concept images are taken from the respective concept videos if applicable (and are in order of appearance in said video), so credit to each of the theme designers. Some defunct backgrounds from the original concepts can also be found under "RS Collection." 

This is not an official season, and updates are sporadic. It started with the release of Melodic Metropolis on 9 Nov 2023, and has no definite end date until Co-Creation as a whole officially ends.

The bolded name in each concept is the level name that was released first; that does not imply that it is the main, or bonus, as the naming system has been abandoned by the officials.