For example, Bugsy's gym got an actual gimmick, Pryce's gym consists of several rooms instead of just one, and some of them just got visual overhauls like Chuck's and Falkner's gyms. Mt. Silver was both expanded and reworked into a real dungeon, Seafoam Islands was brought back and reworked, Rock Tunnel was reworked and many more such changes are throughout the games. The locations that weren't revised are mostly ones that are already large and complex enough as they were in the original games, such as Mt. Mortar or the Bell Tower.