The criteria for nominations are as follows:
Icon-status: The toy is widely recognized, respected, and remembered
Longevity: The toy is more than a passing fad and has enjoyed popularity over multiple generations
Discovery: The toy fosters learning, creativity, or discovery through play
Innovation: The toy profoundly changed play or toy design. A toy may be inducted on the basis of this criterion without necessarily having met all of the first three.
While Bop It continues to be popular, Pokemon itself changed the competitive field of video games. Until then the only real gaming competitions were for fighting games which were usually rated T to M. The Pokemon games fit all the criterion easily. Each gen of the games give a new sense of discovery with new Pokemon and a different region to explore, Pikachu is recognizable to even great grandparents, its popularity continues to grow, and many back in the 90s thought the craze would fade out like other fads of the day. It never faded and here we are nearly 20 years later.