Super Mario Generations

This is what happens if Mario follows Sonic in this type of game.

Bosses

 * Koopalings: They appear in all the worlds as mini-bosses.

World 1: Super Mario Bros. (1985)

 * Fake Bowser

World 2: Super Mario Bros. 2 (U.S. Version)
1988-World 3 Of Super Mario Bros. 3
 * Birdo
 * Mouser
 * End Boss: Wart

1990-World 4 Of Super Mario World

World 5 of Super Mario 64 1991-World 6 Of Super Mario RPG: Legend of the Seven Stars

1996-World 7 Of Paper Mario

2002-World 8 Of Super Mario Sunshine

World 9 of Mario & Luigi: Superstar Saga 2006-World 10+11 Of Paper Mario: The Thousand-Year Door 2007-World 12 Of Mario & Luigi: Partners in Time 2009-World 13 Of Super Mario Galaxy 2010-World 14+15 Of Super Paper Mario 2011-World 16 Of Super Mario Galaxy 2 2012-World 17 Of Mario & Luigi: Bowser's Inside Story 2012-World 18 Of Super Mario 3D World 2013-World 19 Of Mario & Luigi: Dream Team World Bowser World Final Battle