メタルスラッグXXPSP PlayStation Portable, 2009 Metal Slug XX メタルスラッグXX Also released in North America and Europe. PlatformPlayStation Portable Released in Japan23 December 2009 PublisherSNK Playmore Product codeULJS-00246 Mediaphysical Other regions North America Metal Slug XX 23 February 2010, Ignition Entertainment, physical Europe Metal Slug XX 25 June 2010, Ignition Entertainment, physical (assumed) Add to my collection Open in Tana