A guide to completing World 6-10 in Super Mario Bros 3 for the Nintendo Entertainment System.

How to Clear World 6-10

Jump onto an ice platform, being careful not to let the two Red Koopa Troopas hit you.

Go to the right, to where there are some bricks and a ? Block with two Red Koopa Troopas walking back and forth. The ? Block contains a Super Mushroom or Fire Flower.

After that, there are two bricks on top of two Ice Bricks. Use an Ice Brick or Koopa Shell to hit the rightmost non-ice brick, and a vine will grow up out of it. Climb up the vine, and at the top, hit the leftmost brick to make a P Switch appear. Before you hit it, be aware that you can get a Hammer Suit in this level if you're Fire Mario, but you will need to use the P Switch to get it, by doing the following: after you activate the P Switch, you have to go to the right, to where there are four Frozen Munchers on top of a pipe. You have to shoot these with fireballs to unfreeze them, and if the P Switch is still active, they will be coins. Collect those coins before they turn back into Munchers, and you can go down the pipe and hit the Mega ? Block to get a Hammer Suit. You will equip it right away. Then you can slide down to get the coins on the slopes. Then go through the pipe at the bottom to return to the area just before the pipe you went down.

If you don't want to try to get the Hammer Suit mentioned in the previous paragraph, you can instead fall through the large column of coins that appears after you step on the P Switch. At the bottom, don't let the Buster Beetle hit you. You can hit the third ? Block to get a Fire Flower.

After that, there is another Buster Beetle, and some coins above some Frozen Munchers. If you throw fireballs at the coins, be careful not to hit the Munchers below.

Then go to the right, get past the Paragoomba, and throw fireballs at the frozen coins to get them. Then jump on the Red Paratroopa to reach the area of frozen coins after it.

You can carefully thaw out the coins while trying to get rid of the Buster Beetles, while also trying not to thaw out the Munchers below.

After that area, jump over the gap, carefully get past the spinning Rotary Lift, stomp on or ignore the red Koopa Troopa, then keep going to the right, and hit the Goal Block to complete the level.

After the Level

If you didn't do World 6-9, you can optionally do it now. Or just continue on to World 6's third fortress.