Flagman D.D. mini-game:
Complete the game with a 100% status with all treasure and map pieces. A bonus game can be played after the final level.
Press Select + Start + A + B during game play.
Press Start to pause game play in any stage. Keep pressing Select until a blinking line appears. Hold A + B and press Left or Right to select an item, then press Up or Down to change the amount of that item, up to 99.
Complete the game with a 100% status with all treasure and map pieces. The levels on the map that have a Boss at the end will have a skull nearby, marked with an arrow. Choose one of these levels. Then hold Down and press A at the level name screen. The game will proceed directly to the Boss.
Successfully complete the game. Then, go to the level in which you play basketball against the giant rabbit. Throw an enemy at the wall next to his lair. The wall will break. Throw the enemy again at the next wall to reach a door. Enter the door and you will complete the level unlock a new chapter will be available.
Hint: Stay flat:
Jump at the birds while flat to prevent them from returning your character to normal. If hit correctly, they will be stunned and leave the screen.
Hint: Moving on conveyor belts:
Pick up an opponent and carry it while walking over the conveyor belts to move without being pulled or pushed to either direction.
Hint: Playing basketball against the big rabbit:
When playing basketball against the big rabbit, after jumping on him to turn him into a ball, pick him up, jump in the air fairly close to the basket, then hold Up and press A. Wario will do a better basketball shot, and allow a more fast-paced game.
Hint: Multiple level tracks:
Do not wake up in the first stage. The soldiers will pick you up and throw you out of the castle before taking it over.
In the "Defeat the giant snake" level, while in the chamber before the location you go to if the snake eats you, run at the wall on the right and jump.
In the SS Teacup "Drop the anchor", while in second room, the bottom the wall on the left can be broken by an enemy.
Hint: Really Final Chapter tips:
For the first section, go to the right of the screen, and use the ground slam move until you manage to smash through the ground. Keep going from there to reach the door. Then, get past the flying spike men and jump on the floating cupboards to get across. After the second section of this kind, stand on the very edge of the half-platform and execute a high jump to the next half-platform. On the third and last section of this kind, do not get on the first cupboard, and wait until the second one appears. There are some more small platforms against the wall. Do the same technique to get up them. When you reach the section with the shocking bee, stun him, then carry him through the stage. When you see a narrow tunnel that can be entered by ducking, take the bee towards it. Throw the bee in the tunnel, but not too hard or he will die. When he comes back to life, crawl through the tunnel. This will knock the bee through the tunnel. After getting out the other end, throw the bee at the enemy blocks to smash them and allow you to get to the next door. In the next room, pick up the spear man and drop him on the platform that Wario cannot stand on (it is faint and may look like a decoration on the wall). This next part is very tricky. Jump on him, then do a high jump off him (Jump and Up). Land on him, and do the same thing to get across to the other side. Then, climb the stairs, and do exactly the same thing the other way. It will be harder here because of the ceiling. At the end, go through the door. There is a section with about fifteen of those platforms up against the wall. However, it is actually easier than it looks. In the next section, jump up close to the floating bird and do a high jump off of it when it is at the right spot to jump up to the next platform. Use this technique to get through the entire section. In the next room, there are some conveyor belts running the wrong way. Get onto the first one, and charge along it. As soon as you are about to hit the bit of the ceiling hanging down, duck, and your character should slide under it. Do this a few more times and you should be past that section. Then, when there are conveyor belts and spikes on the floor, charge across the conveyor belt and jump when about to hit the spike. You should hit your head on the ceiling and land on the other side. Do this a few times, and go through the door. In the next room, get squashed by the big rock. Get past the dripping water, execute high jumps up the platforms on the left, get past two more water drips, and walk to the very edge of the big platform you are standing on. Jump to the right from that location. Use your gliding action well to get to the end, and get hit by the dripping water there. Then, go through the door, and into the final room. There is a giant spear man walking along a platform that Wario can not touch, and a lot of spikes. Jump off, do a high jump off him, and back onto your own platform to stun him. Then, ground-slam him ten times. Hopefully, your "stunning" jump will knock him to the very side of the platform. If he falls off, all is lost. Jump off, and ground slam the side of his body that will knock him to the other edge of the platform. Fly off him, and land on the part of his body that will send him back to where he was. Hit him ten times, and he will die. You do not have to get the glowing coin, Simply killing him will finish the level, and the entire game.
Glitch: Saved game deletion:
If the game is played on a classic Game Boy after a game has been saved after play on the Game Boy Color, that saved game file will be automatically deleted.