Popularity

I recall what were popular among students in my school or class from elementary school to now.
Starting from elementary school.

Elementary school :
The first one was Pokemon, everybody had it. After Gameboy was released, Pokemon became big boom in Japan, and later the whole world. There were 3 versions, Red/Blue/Green. and I got the green one. Nintendo was quite smart that each version had a slight difference, if you have to complete all kinds of pokemon, you have to exchange yours with someone's, there were some pokemon that appear in one but not in the other, so Nintendo successfully children interact with people to exchange and have a battle. There were some cheat, I remember. Turning your pokemon into 100Lv, and getting a pokemon that doesn't appear. Anyway, Pokemon was something my generation all share, and still the popularity of Pokemon continues.
The next one was Yu-gi-oh. it is card game, and you collect them and have a battle. It has Monster, Magic, Trap card and that makes battle really fun and strategical. I really got hooked
to this, I am the player from the former version of Yu-gi-oh, when cards were not sold in packs, with some kind of vending machine. I first bought the new version, I got the rare card, but I was a beginner that I just saw the number of attack/defense, that my friends told me to exchange, and I did! I lost the rare one. Yu-gi-oh was really popular that there were some social problem, kids steal someone's. And I was stolen. When I went to the place where children get together, someone told me to show my cards collection, and he returned. but I realized later that I was stolen.