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
@606Metal Slug 2
Neo Geo
1998
@607Metal Slug X
Neo Geo
1999
@1783Metal Slug 3
Neo Geo
2000
@1545Metal Slug 3
Xbox 360
2008
@381ACA NEOGEO METAL SLUG X
Xbox One
2017
@2488