Super Mario Maker

Super Mario Maker is a game for the Wii U that allows players to create their own 2D Mario levels.

Course Maker
As the title of the game suggests, players can make their own Mario levels based on one of four different Mario games: Each one of these game styles comes with all of the mechanics available in the original games, with a few differences. For example, Mario can now go backwards in Super Mario Bros, but can no longer spin jump on Grinders in Super Mario World. He can also now spin jump on Piranha Plants, Thwomps, Spinies, and Spike Tops in New Super Mario Bros. U, like he could in Super Mario World.
 * Super Mario Bros.
 * Super Mario Bros. 3
 * Super Mario World
 * New Super Mario Bros. U

Each level created can be up to twelve screens long, two screens high, and have a time limit of up to 500 seconds. Players can lay down a variety of items to create these levels, such as blocks, enemies, and platforms.

Once a level is completed, it can be uploaded to Course World for others to play. However, the level must be beaten before it is uploaded to prove that it can be. If there are any checkpoints in the level, it must be completed from the beginning and then from each checkpoint.

100 Mario Challenge
The 100 Mario Challenge is essentially a story mode to Super Mario Maker. The player is given 100 lives to go through a certain number of levels. There are four modes to choose from: Easy, Normal, Expert, and Super Expert (the latter of which was introduced in an update in March 2016). Easy mode has the player go through eight levels with very high completion rates. Normal mode has 16 levels and slightly lower completion rates. Expert mode also has 16 levels and even lower completion rates. Super Expert has only 6 levels, but extremely low completion rates in its levels. The final level is always a castle, and completing that final level plays a cutscene in which Mario rescues Princess Peach, after which the credits roll and the player is awarded with a Mystery Mushroom costume which can be used in Super Mario Bros. levels.

Completing Normal mode unlocks Expert mode, and completing Expert mode unlocks Super Expert.