7-1

7-1 can refer to the following:
 * World 7-1 from various games
 * Level 7-1 from Mario & Wario
 * Stage 7-1 from Donkey Kong for the Game Boy
 * Giddy Sky 7-1 from Super Princess Peach
 * Room 7-1 from Mario vs. Donkey Kong 2: March of the Minis
 * Chapter 7-1 from Super Paper Mario
 * Area 7-1 from Mario vs. Donkey Kong: Mini-Land Mayhem!