New Super Mario Bros./World 1

World 1 is the first world of the game, and it is without a doubt the smallest one, with the least amount of levels contained within it. There are 8 levels in total here, one of which is down an optional path and one that can be skipped by taking a secret exit. There are also two red Toad Houses, two Green Toad Houses and one Mega Toad House. The red Toad Houses can be reached by going down alternate paths and exits, but green and Mega Toad Houses can only be accessed by spending Star Coins.