Rule 1: You have to build a wide go karts track that looks as nice as possible! With wide go karts I mean that you need to have 2 tiles of go kart track next to each other for the entire track. Check the above mentioned tutorial for more information.
Rule 2: No custom scenery in this round!
Rule 3: Maximum map size is 40x40!
Rule 4: You can only add 1 extra functioning tracked ride, like a miniature railway or a rollercoaster, and 2 extra functioning rides with a base, like a merry-go-round, ferris wheel or a launched freefall tower. With functioning ride, I mean a ride that is either opened or in test mode.
Rule 5: Unlimited trackitecture is allowed, but you cannot add any extra functioning rides this way, just track pieces! You are allowed to temporarily open them if you want to spawn a stationary vehicle, for example. These rides have to be closed when you submit the map.
Rule 6: Have fun! Even if you don’t score well, this contest is a great way to improve your skills in this game!

Wizard_IRL