1-1

1-1 can refer to the following:
 * World 1-1 from various games
 * Level 1-1 from various games
 * Stage 1-1 from Donkey Kong for the Game Boy
 * Classic World 1-1 from Super Mario Advance 4: Super Mario Bros. 3
 * Ladida Plains 1-1 from Super Princess Peach
 * Mario Classic 1-1 from Mario Hoops 3-on-3
 * Room 1-1 from the Mario vs. Donkey Kong series
 * Chapter 1-1 from Super Paper Mario
 * Area 1-1 from Mario vs. Donkey Kong: Mini-Land Mayhem!
 * 1-1 Remix (Ground), a sample course in Super Mario Maker
 * 1-1 Remix (Raccoon Mario), another sample course in Super Mario Maker

1-1