donkey_course = Earlier DK Pass/Waluigi Pinball.test1_course = A course used possibly to test the environment of some courses.dokan_course = A course used possibly to test the karts' collisions.luigi_course = First Waluigi Pinball implementation.old_mario_gc = Mario Circuit from Mario Kart: Double Dash!!.Delfino Square = town_course, and in the demo version town_course is different.Cheep Cheep Beach = beach_course, and the one for download play is beach_courseD.Figure-8 Circuit = cross_course, and the one for download play is cross_courseD.It can be accessed with Action Replay without textures, or with textures with ROM Hacking. This course was going to be the Block City battle arena from Mario Kart: Double Dash!! but was never completed with the blocks for unknown reasons and was replaced by Pipe Plaza or Block Fort.
