NES versionIn the NES version, between the second and third period of a hockey game, a quick mini game of Gradius is sometimes playable in which the player has a few seconds to try to blow up an enemy ship. There are also ads for other Konami games of that era displayed after the mini game is over.
Contributed by Alaka (29850) on Jan 12, 2010. [revised by : Patrick Bregger (98617)]. -- edit trivia