Metal Slug/Trivia


 * Cancellation: Metal Slug Wars was an RTS released for iOS around early 2013 and removed from the store within the same year. Most of its assets and music were transferred to Metal Slug Defense.
 * Milestone Celebration: 3D and Attack are dedicated for the 10th and 20th anniversary of the franchise respectively.
 * No Export for You: The 3D installment for PlayStation 2 has not been released in North America.
 * Also, from the main series, the Combat School, a mission-based Dating Sim.
 * Port Overdosed: SNK just loooooooooves re-releasing the original game. It's hard to find a single compilation by them that doesn't include it.
 * Prop Recycling: Present to varying extents in all the sequels, but 4 is especially egregious in that almost everything is a recycled asset; even the bosses are reused sprites cobbled together and recolored. This is a criticism of 5 to, although it's not as noticeable (outside of a room where the mechs in the background have the wrong faction markings) since the bosses are new and the sprite edits are generally more creative than simple recolors.
 * What Could Have Been: Early on, Sophia was considered to play the role of Player 2.
 * Many ideas and models were scrapped from the final product, especially in 5. Including a giant turtle-like mecha and the native zapped by the lightning at the beginning as the final boss on a levitating, laser-spitting pillar. See this page for all the stuff that people have found from the game files.