Related Web Sites
- Metal Slug Database (Metal Slug series' fan site with detailed information)
- Wikipedia: Metal Slug 4 (Information about Metal Slug 4 at Wikipedia)
Searches and Links
Amazon ; an online store selling new and used computer and video games.
Google ; search engine that ranks by popularity
eBay ; Many older games listed on MobyGames are out of print. Auction sites like eBay are the best place to find them.