Power Instinct is a fighting game, with this particular version being the USA release of set 1. This suggests regional differences, and the fact that there's more than one version set implies potential updates, balance changes, or added content.  To complete the introduction, information about the game's developer and publisher are needed.  The [Edition] designation might also refer to a specific retail release.

Power Instinct (USA, version set 1)

Power Drift (World, Earlier)