SMF1 also offers a level editor so that a player can create, delete, load and play or share their own custom levels.
The player can direct the character to walk, run, jump and shoot their way through a level, past the many challenges that appear before them. The game features many enemies, secret levels and hidden items. The player, via Mario or Luigi, collects floating coins, defeats enemies and explores while on a mission to rescue the Flash version of Princess Peach from evil. The player helps one of the famous Italian brothers and plumbers, Mario or Luigi, explore the Flash version of Mushroom Kingdom, starting in a tropical location filled with palm trees and doors leading to a wide variety of locations. Super Mario Flash, or SMF1, is a classic online fan-made arcade platformer based on Nintendo's Super Mario Bros.