Such as
mg_kohztec_course
mg_kc_course_v1-1
mg_mario_course_v1_2
mg_office45_course
mg_pharaohs_tomb2_go_v3
It seems more players are on the mini-games sever when course maps are on, many players enjoy the difficulties and the satisfaction of completing the map. It also helps players with movement so they can get better at the game.