Okay, I'm going to be that guy I'm afraid.
During his elementary school he made a Star Trek Shooting game with his dad. In High school he created jeopardy game and the once very famous tetris game.
It should be "He created a jeapordy game and a tetris game which was once very famous", yes I know, it just really bothered my this line because it implies he was the original creator of it if you take it literally.
you are correct it does sound like he created it. I will modify it. Thanks for pointing it out @lethn1
lol no problem :) I upvoted your post regardless.
thank you @lethn1