syltefar.com: Metal Slug
Metal Slug Series
Wikipedia: Metal Slug
6 games in database, 1 completed (17%). Year range: 1996-2017, median: 2000.
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Metal Slug
Neo Geo 1996@606
Metal Slug 2
Neo Geo 1998@607
Metal Slug X
Neo Geo 1999@1783
Metal Slug 3
Neo Geo 2000@1545
Metal Slug 3
Xbox 360 2008@381
ACA NEOGEO METAL SLUG X
Xbox One 2017@2488