4780 Pokemon Heartgold Uxenophobiands Updated Instant

Wait, maybe they're referring to online databases or communities that track Pokémon. For example, sites like Serebii or Bulbapedia have extensive databases. But 4780 seems way too high. Alternatively, maybe they're referring to a specific version of the game with a lot of Pokémon added. But HeartGold is a remake of the fourth Gen game, so normally there are around 494 Pokémon there.