3-4

3-4 can refer to the following:
 * World 3-4 from various games
 * Level 3-4 from various games
 * Stage 3-4 from Donkey Kong for the Game Boy
 * Shriek Mansion 3-4 from Super Princess Peach
 * Room 3-4 from the Mario vs. Donkey Kong series
 * Chapter 3-4 from Super Paper Mario
 * Area 3-4 from Mario vs. Donkey Kong: Mini-Land Mayhem!