You get 6 Pokemon to choose from, Charmander, Bulbasuar, Geodude, Ekans, Staryu, and Pikachu,
You start out with 5 Pokeballs. You found a wild Koffing in your way.
You caught a Koffing sucsessfully. Go and fight Brock now before any
beats Brock before you. Brock has a Weezing and an evoled form of your
Pokemon.
