I've visited plenty of arcades in Japan, and they were all horrible. Sure, the games were interesting, but they are sad and sometimes creepy places. Smoking is allowed in there, and with Japan's well known tobacco abuse problem, words fail to describe the stench in there. My Japanese girlfriend told me that "nobody normal would ever go in there" and was actually disappointed in me wanting to enter in that sort of pla…
The tobacco issue was a lot better in Tokyo when I left; most indoor places are non-smoking now. IMO that is the only true benefit Tokyo reaped from the 2020 Olympic preparations.