Keep Pokémon "similar" (e.g., swapping a bird for another bird).
Modern randomizer tools (like the ) let you dictate exactly how "crazy" the game gets. You can choose to: pokemon+fire+red+leaf+green+randomizer+rom+better
We’ve all played through Kanto dozens of times. We know exactly where to find a Mankey to beat Brock or which patch of grass holds an Abra. A randomizer completely deletes this "muscle memory." Keep Pokémon "similar" (e