A Korean Game Rating Board submission (via NeoGAF) named "Killer Instinct Classic 2" as an upcoming release for the Xbox One, suggesting that Microsoft is planning a port of the 1996 arcade game Killer Instinct 2.

Microsoft previously bundled a port of 1994's Killer Instinct with its Xbox One reboot issued last year. The retitled Killer Instinct Classic was available as a free bonus for players who purchased Killer Instinct's Ultra Edition and boxed Pin Ultimate Edition.

Developer Iron Galaxy Studios revealed earlier this month that Killer Instinct 2 star Maya will join Killer Instinct's playable roster this fall as part of its second season of content. Microsoft has not confirmed Killer Instinct Classic 2's existence or a release date, but given the publisher's previous release schedule for Killer Instinct content, the port could surface as part of a second-season bundle.

[Image: Iron Galaxy Studios]

This article was originally published on Joystiq.