Each successive generation of games builds upon this concept by introducing new PokÃ mon , items , and gameplay concepts . Some of the general concepts were featured elsewhere before being introduced in the games ; double battles appeared in the anime long before appearing in the games , and PokÃ mon abilities are similar to the PokÃ mon Powers introduced in the PokÃ mon Trading Card Game . The exception to this concept is PokÃ mon Yellow , where players are given a Pikachu , the Electric-type mouse PokÃ mon famous for being the mascot of the PokÃ mon media franchise , who walks along behind them .