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The Amusement Machine Show (アミューズメントマシンショー), (or AM Show, although many simply call it the JAMMA Show or even JAMMA), is a trade show held annually by the Japan Amusement Machine and Marketing Association (JAMMA) in Tokyo. It was also likely referred to as the Japan Amusement Trade Association Show (JAA Show) in its early days to distinguish it from similar events.
The JAMMA Show is amongst the longest serving arcade expos, with Sega appearing in some form every year since at least 1986.