Pokemon Brick Bronze is a game created by tbradm and lando64000 with over 42 million visits, 301,000 favorites and 107,000 likes. The game used to have a price to pay but has since been made free. It is a RPG similar to the Game Boy/GBC/DS/3DS games of the same name. Players capture Pokemon and train them in order to collect Gym badges in different cities but features its' own original storyline. The game also features an RTD where players can visit the Trade Resort, where they can trade their Pokemon with others and a Battle Colosseum to test their skills. As the game is currently still in Beta mode, only 5 Gym badges can be collected.
To learn more about Brick Bronze, please check out the Wikia here