One of the biggest hurdles in DS ROMs is trade-only evolutions. A top-tier randomizer setup will always have toggled ON, allowing Kadabra or Machoke to evolve via level-up (usually level 37). How to Create a High-Quality Randomized ROM
To play a randomized version of Pokémon Black 2 , you typically need a "clean" base ROM and a separate tool called the Universal Pokémon Randomizer pokemon black 2 randomizer rom top