Okay. So, 33 out of 493 Pokémon of all previous generations return in Pokémon Mystery Dungeon: Gates to Infinity. 31 one of these are recruitable allies, and the last 2 of these are unrecruitable NPC boss opponents. But sadly, 460 out of 493 Pokémon did not return in, but are excluded from the game. So, I'm just wondering why the game creators have excluded 460 out of 493 Pokémon of all previous generations from the game?