Pokeballs are an amazing piece of science in the world of Pokemon. They somehow trap a Pokemon within its spherical walls and allow it to exist inside the small ball, even if the Pokemon is monstrous in size, like a Wailord. Did you ever wonder how Pokemon trainers caught and kept their Pokemon before the modern day Pokeball? After all, people had to catch and keep Pokemon somehow, back in the days before someone invented the Pokeball. This is a question many long time Pokemon fans asked when the first generation of games came out. Thankfully, Game Freak had an answer.