 This fighting game featured several gameplay innovations unique to  the genre at the time. The "chi" meter limited the number of special  attacks used, and it could be recharged by holding down a button  (accompanied by a "charging up" animation). The "super death blow"  was a new concept; this dealt heavy damage but was slow to execute  and exhausted the "chi" meter. Likewise, the new "desperation  attack" could only be executed when the player had a low life meter  and a full "chi" meter, although this was also featured in another  SNK game, _Garô densetsu 2 (1992) (VG)_ (qv), released the same  year. All of these ideas would become common features in fighting  games.