My friend is super in to indie games, he showed it to me way back in 2005 or so. He never got that into it, now he regrets ever introducing me to it, especially after I told him each time I got rank 1 on both west and east servers, and when I hit 10th dan before anyone else.
I've grown a life since, but I look fondly back on qi grinding in judo, before it was called qi.