This cool gif shows the evolution of the game over its 20-year lifespan.

20年の旅。20周年おめでとうございます！#Pokemon20 #ポケモン20周年 pic.twitter.com/fhCpBEvZGQ

— memi (@_gamemix_) March 2, 2016

Be sure to check out this video with more in-depth history. (h/t The Verge)