I'd say mid to late 30s. Pokemon came to the states in full force in the late 90s early 2000s (I think 98ish or 99) I remember having the pokemon game for the original gameboy back when it came out. If you want to know how this latest game works I can give you a brief explanation if you're interested. If you just brought it up to bash the game and those who play it, I'll shrug and move on with a "alright, have a nice day."
Holy nerd fest. So I'm sitting at my neighborhood brew pub having a burger, knocking back a few and people watching. ( sitting outside on sidewalk ) there's one of these Pokémon things here because there's a nonstop parade of 30 something nerds wearing skinny jeans walking up with their stupid face in a phone and getting way too excited at finding one of these things. WTF nerds!