Mario 3 Warp Whistles

Whistle #1 is in Level 1-3. Squat on the white block for 5 seconds, and you will fall through the block and end up in the background. Keep running to the right as far as you can, without getting hit by an enemy. Run behind the black screen at the end to find Toad's house, where he will give you the first Warp Whistle.

Whistle #2 is in the World 1 fortress. Hit the first Question Block if you're small Mario, then hit the second Question Block for a Super Leaf. Stomp the Dry Bones, get a running start and fly up and right above the ceiling. At this point, you should be on the ceiling, but unable to see Mario. Keep walking to the right until you stop. Press Up to enter the hidden door, which leads to a secret room with the second Magic Whistle.

Whistle #3 is in World 2. First, get a Hammer from one of the Wandering Hammer Bros. on the map screen. Use it on the rock in the upper-right corner to reveal more areas, including a third Wandering Hammer Brother who guards the third Warp Whistle.

Remember, if you use a Warp Whistle while in the Warp Zone, you can go straight to World 8! Be careful though, there is no going back once you use a Warp Whistle.

If you're playing on the Wii via the Virtual Console, why not just take your time and beat each level one at a time. By pressing the Home button, you can leave the game in a paused state for as long as you'd like, even when the console is off.