Over 900 Pokémon are available in Pokémon Go but, like in a regular game, some are harder to catch than others. Here are some of the rarest Pokémon in Pokémon Go. In Pokémon Go, the rarity of a Pokémon is determined by whether on not it spawns in the wild and the steps necessary to find it if it doesn’t. Some Pokémon are available only in very specific circumstances and, even if you find them, sometimes the chances of capturing it are below 1%. Rarest Pokemon in Pokemon GoArticuno, Zapdos, and Moltres are the legendary trio from the first generation. These three are available in their regular …