From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Level_x-5&oldid=2677926"
This level is made up of many Bob-omb Blocks and three Bob-omb dispensers. The player has to use Bob-ombs to make their way to the bottom-left of the map where the Key is and to the bottom-right where the locked door is. There are also a few Semisolid Platforms.