The graphics are virtually the same as the original versions released on arcade (and the more recent titles published on PS2 and Xbox). The only major change is that all games now display at a converted 480i resolution (compared to the standard 240p). Cooperative gameplay is enabled on the console versions of the game, while the PSP version has a wireless mode so that two people can play together and work as a team.
A downloadable version was made available on the PlayStation Store for PSP on October 1, 2009. The Metal Slug Anthology was then released on PC in 2009 under the name Metal Slug Collection PC. However, this version offers less contents and an alternative menu interface. It was also released on PlayStation Store for PlayStation 3 and PlayStation 4 in 2015 and 2016 respectively.
Metal Slug Anthology Game Link:-