This is a tutorial level made for SMBX. It details all the game's mechanics in one compact stage. It can be edited and customized to meet the needs of any SMBX project. The mechanics are broken up into seven categories:
Basic & Advanced Platforming (everything about movement)
Pick Me Ups (how to use carried items)
Basic & Advanced Power-Ups (how to use all the game's power-ups)
Rainbow Rides (how to ride Yoshis, boots, shells, etc.)
The level even covers the different characters and their abilities. Be sure to remove any character blocks you don't want the player to access. Enemies in the stage are flagged as noHurt, so there are very few ways to die. Also of note, the Advanced Power-Ups room forces the player to leave with nothing but leaf power-ups. This is to prevent them from stealing valuable tanooki and hammer suits.
As the stage's creator, I offer it to the community at large for use in their own works. No credit necessary, but please don't claim it as your own.