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Metal Slug XX (reads Metal Slug Double X) is a enhanced modification of Metal Slug 7, released in December 2009 for the Playstation Portable and Xbox Live Arcade with new content. These are backwards compatible with the PlayStation Vita and Xbox One. A remastered version for the PlayStation 4 is set to release on Summer 2018.

New Features

  • The screen is not re-dimensioned anymore, like in the Nintendo DS. Additionally, the player can select the aspect ratio of the screen:
    • 4:3 (Classic aspect ratio with designed borders at left and right of the screen)
    • Wide (Fullscreen)
    • Clear (Like "4:3" but with a smaller screen for better visual quality)
  • Rebel Troops reuse their sound effects from Metal Slug 6 (PSP only).
  • Old enemies reappear again, such as the Mars People and the Hunters.
  • Change in items, Slugs, and enemy placement.
  • Multiplayer mode by using ad hoc and online services. Unlike other games, there is no drop-in multiplayer,
  • Leona Heidern as a downloadable character (Costs $0.99).
  • Altered missions in the Combat School mode. The Item Collection challenges are replaced by the returning Survival challenge and Super Devil rank.
  • New Special Moves:
    • Marco has the Burst Shot. He can autofire at a faster rate but has to stay still.
    • Tarma can kick vehicle Slugs to replenish its health, although this attack can damage the Slug.
  • New Hidden Routes:
    • Mission 1 - There should be a pitfall/hole before the Di-Cokka and the DANGER barrel. Go there and fight the hunters.
    • Mission 5a - When you reach the end of the second part of the stage, it says GO right. Instead, go left until you find a teleporter. Go in the teleporter and fight UFOs and tons of soldiers.
    • Mission 5b - Just like Mission 5a but do not go in the teleporter. Jump over it. You should fight hordes of Mars Peoples in there.

Trivia

  • Metal Slug XX is the third installment in the series to increase the number of playable characters, from 6 to 7 with the addition of Leona.

Screenshots

Covers

Games
Main Series Metal Slug: Super Vehicle-001 | Metal Slug 2 (X) | Metal Slug 3 | Metal Slug 4 | Metal Slug 5 | Metal Slug 6 | Metal Slug 7 (XX)
Spin-Offs Metal Slug: 1st Mission | Metal Slug: 2nd Mission | Metal Slug Advance | Metal Slug 3D
Mobile Metal Slug Mobile | Metal Slug Mobile Impact | Metal Slug: Allen's Battle Chronicles (Mobile 3) | Metal Slug Mobile 4 (UMS: Login) | Metal Slug Soldiers (UMS: Tank Conspiracy) | Metal Slug Fighters (UMS: Fierce Battle) | Metal Slug Warriors (UMS: Triumph) | Metal Slug STG | Metal Slug Mars Panic! | Metal Slug Tactics | Metal Slug M1 | Metal Slug M2 | Metal Slug 2013 | Metal Slug Team Mission | Metal Slug Defense | Metal Slug Attack | Metal Slug XX Online
Pachinkos Metal Slug Type-A | Metal Slug SV-001 | Metal Slug 3 (Pachinko)
Compilations Metal Slug 4&5 | Metal Slug Anthology | Metal Slug Complete PC
Cameos The King of Fighters' 2000 | SNK Vs. Capcom: CHAOS | Neo-Geo Battle Coliseum | The King of Fighters: Maximum Impact 2 | SNK Vs. Capcom: Card Fighters Clash | SNK Vs. Capcom: Card Fighters DS | Days of Memories 2 | Neo Geo Heroes: Ultimate Shooting! | Battle Cats
Canceled / Discontinued Metal Slug Zero | Metal Slug Touch | Metal Slug Revolution | Metal Slug Wars
Ikari Warriors Ikari Warriors | Victory Road | Ikari III: The Rescue | Ikari: Leona Gekitohen
Irem's D.A.S. Trilogy

In The Hunt | Undercover Cops | Gunforce II