I'm definitely getting it if he does. For others, I never played Karateka (got the retro iOS version a while ago) but the book stands on its own without having

I'm definitely getting it if he does. For others, I never played Karateka (got the retro iOS version a while ago) but the book stands on its own without having played any of the involved games (of course, having lived through it helps, so you know what games in those days involved)