Here is a new concept (or at least, a concept I didn't see):
Flickering Paradise Serie (or FPS)
The idea is almost simple:
Give to some people the same map with only a few blocks (mostly checkpoints, start and finish(es)) , ask them to map a track on it (with or without restriction) and then mix all of them in only one map.
The result is a chaotic track with mixmapping everywhere and a lot of possibility to finish the map.
That concept is for people some puzzle map, with pathfinding and trial-ish challenges.
Thanks to SioulB and Roche who did one part of the track and so help me to realize that funny idea!
Have Good Fun Luck!