An expansion that can be used with either 'Heavy Metal L-Gaim' (Tsukuda, not Bandai's one) or 'L-Gaim Mark II'. A sheet of counters and a rulebook with additional rules. Very tough to get in even Japan, was originally sold via mail order in an envelope (similar to some Avalon Hill expansions).Expands L-Gaim Mark II Heavy Metal L Gaim - BoardGameGeek