This package of utilities lets you randomize the monsters in each Labyrinth. You can edit the 3 included text files to increase or decrease the likelihood of a certain monster group appearing, or protect certain monsters/rooms from being affected.

The included batchfile/ips patch modifies the game so that the correct graphics display for each monster. It also fixes the Lanmola crash bug.

This should work on any clean original Legend of Zelda ROM.

Updates: V 1.1 - Fixed error in CHRROM bank jump table. Just reapply the IPS.