The game features 63 of the original generation of 151 Pokémon.
It only features about 63 of the 151 Pokémon that existed at the time the game was made.
It only features about 63 of the 151 Pokémon that existed at the time the game was made.
Simplify this paragraph: The game features 63 of the original generation of 151 Pokémon. Output: