How to Find Warps in Super Mario Brothers

Go to Level 1-2. Near the end of the level, you will find two sets of platforms. The platforms closest to you are moving down and the platforms farthest from you are moving up. Go toward the platforms that are moving up. Jump on one of these platforms. Before the platform moves up and off the screen, run and jump to your right. You will land on a brick ledge. Run to the right, past the exit pipe and into a secret warp room with three pipes. The number above the pipes indicates which world you will warp to. Jump on your desired pipe and press down to warp.

Go to Level 4-2. Search the level until you find three brick blocks that are in the air but are too high to hit. Jump underneath the block farthest to the right to reveal a secret coin box. Jump under the middle block to reveal another secret coin box. Use these two secret coin boxes as stairs. Climb them and hit the three blocks above. The block to the left will reveal a vine. Jump on the vine and climb up. Mario will enter a secret level. Complete the level to find a secret warp pipe that will take you to World 6, 7 or 8.

Go to the end of Level 4-2, where you will see the pipe that will take you to the end flag. (This pipe marks the end of the underground section of the level, and looks much like the pipe in Level 1-2.) Jump on top of the pipe and hit the brick blocks above. Jump through the hole you just created and run to the right. This will take you to a warp pipe that will take you to World 5.