World 8-Big Tanks

 is the first of two tank levels in Dark Land, being followed by World 8-Super Tank, and is the first level of Dark Land overall, in Super Mario Bros. 3. It is the only level accessible after clearing Pipe Land and its own completion unlocks. It is entered automatically upon touching the icon on the map.

Layout
This is a horizontally autoscrolling level, though it is only the tanks that move; the player will not move with the screen if they are standing on the ground. The player starts at the forefront of a battalion of moving tanks. The tanks are lined with cannons that fire either cannonballs or Bob-ombs, some have Burners on the front, and others have Rocky Wrenches. There is also a cannon that fires Giant Cannonballs before the Warp Pipe at the end of the level, which leads to a chamber with a lone Boomerang Bro. that will end the level upon being defeated.

Additionally, the original Super Mario Bros. 3 and the Super Mario All-Stars remake have thirteen tanks, whereas Super Mario Advance 4: Super Mario Bros. 3 has ten.

Enemies

 * Cannons
 * Cannonballs
 * Bob-ombs
 * Giant Cannonballs
 * Rocky Wrenches
 * Boomerang Bro.

Level statistics

 * Power-ups: 1 (Super Mushroom or Super Leaf)
 * 1-Up Mushrooms: 0
 * Secret areas: 0