Fungi Beetles' Domain is the third level and first underground level of A Koopa's Revenge 2, or AKR2 for short.
- At the very beginning of the level, you can jump over the wall and reach the end of the level.
- The level introduces falling platforms.
- There is a secret pathway that leads to the Yellow Switch Palace.
To get there, near the end of the second part of the level, try jumping on the falling platforms and continue doing so until you've reached the top pipe. Enter it, and you've found the secret exit to the palace!