: You must have a legal Pokémon White 2 ROM file (usually in .nds format).
For those unfamiliar, a ROM (Read-Only Memory) is a modified version of a game that can be played on an emulator or mobile device. The Pokémon White 2 Extreme Randomizer ROM is a customized version of the original Pokémon White 2 game, where various elements have been randomly altered to create a fresh and challenging experience. pokemon white 2 extreme randomizer rom download