It is important to address the search term "ROM." A Randomizer is not a standalone game you can simply download and play. It is a patch—a program that modifies an existing game file.
: If you randomize trainer teams, a random NPC might have a team of six legendaries or Mega Evolutions, making standard battles significantly harder Nuzlocke Compatibility pokemon alpha sapphire randomizer rom top
Most players use these ROMs for specific self-imposed challenges: It is important to address the search term "ROM