How to unlock hard mode and world select in Super Mario Bros.
How to unlock the second, harder quest and choose any world in the original NES Super Mario Bros.
Original 1985 NES/Famicom game. Luigi shares Mario's movement in alternating two-player play. Super Mario All-Stars, Super Mario Bros. Deluxe and The Lost Levels change features or courses and are outside these guides.
Hard mode (second quest)

Beat World 8-4 and rescue the Princess. The title screen then starts a harder quest: every Goomba becomes a Buzzy Beetle, enemies move faster and lifts are shorter.
World select
Once hard mode is unlocked, press B on the title screen to choose any world before starting.
Playing as Luigi
Choose 2 Player Game. Luigi plays the second player’s turns with the same moves as Mario in this game.
After hard mode
Finishing the harder quest unlocks nothing more.
More Super Mario Bros. quick answers
Super Mario Bros. codes: continue, world select and infinite livesWhere to find the Warp Zones and Minus World in Super Mario Bros.The game has no save, so hard mode is lost when the console is switched off or reset.
Picture details
Game artwork belongs to its respective rights holders.
