Mario Mania

This is a retro Mario game based off of Super Mario Bros (1985 Game) and Super Mario Bros: The Lost Levels (1986 Game)

Warp Zone

 * World 1-2 (2, 3, 4)
 * World 4-2 (WZ1 - 5, WZ2 - 6, 7, 8)
 * World 8-4 (9, A, B)
 * World B-4 (C)
 * World C-4 (D)

Coin Heck (known as Coin Hell in Japan)

 * World 1-1
 * World 1-2
 * World 2-1
 * World 2-2
 * World 3-1 (x2)
 * World 4-2
 * World 5-1
 * World 5-3
 * World 7-1 (x2)
 * World 7-2
 * World 8-2
 * World A-1
 * World C-1
 * World D-1
 * World D-2
 * World D-4

Underwater Heaven

 * World 4-1
 * World 6-1
 * World 8-1

Coin Heaven

 * World 4-1
 * World 5-1
 * World 8-3
 * World 9-3
 * World A-1
 * World B-1
 * World D-2

Ending Coin Heaven

 * World 8-2

Ending Glitch Heaven

 * World 9-1
 * World 9-2

Overworld Heaven

 * World D-4

Production
IT was originally going to be released 2015, then to 2016, then to 2017 to the Switch, finally to 2018.