One uses a Poke Ball or a variant thereof in battle with a wild Pokemon to catch Pokemon in Twelvesky2. Once captured, the Pokemon joins your team and you can level up that creature, exploit its strengths, and use it against other Pokemon as you go about your quest. Your quest is elementary enough to understand, and is again quite familiar to those who have already played games 12sky2 Gold in the series. Thrust into the limelight by visiting a famous Pokemon professor's laboratory and choosing one of his three rare Pokemon for your own.
You can then go about your quest to capture more Pokemon, battle other trainers, and ultimately gain the sixteen badges that each of the Gym Leaders in Johto and Kanto have for you. They must, for the most part, be taken out in order hence our highly linear walkthrough. But it's getting from Gym to Gym and doing everything in between that makes the game truly unique, and truly worth playing for Pokemon fans and RPG nerds alike.