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The first, Martian-themed event.

Extra Ops are event-oriented modes with cooperative elements in Metal Slug Attack, first introduced in 1.4.0. The player is presented with stages that cost Sortie Points Sortie Points to play and give MSD currency MSP.png MSP, Unit Parts Unit Parts, and unique Boot.gif Event Items as drops, while also generating MSA currency Exclusive Points.png Exclusive Points.

Each event typically introduces new Units. With the exception of Snatch Wars, each Extra Ops has short skits at their beginnings and ends.

Extra Ops types

The Extra Ops have a variety of types, each with unique features. Some appear regularly, and some have been entirely superseded by other types - for example, Score Attack Extra Ops were replaced by Snatch Wars Extra Ops, which were in turn replaced by Try Line Extra Ops, and so on. The very first type of event to appear in the game, Marathon Extra Ops, still often appears as the first for each month.

The Ops types also determines the nature of the equippable Event Items used by introduced units. Marathon and Rare Boss EOs have non-craftable silver items. This means the items are only available through that EO until it is released on Another Story. Ranked EOs and United Front EOs (both normal and daily) have craftable silver items, meaning that even after their EO is over, the exclusive items can still be created with normal items, but will take longer than usual to complete.

Active Ops

A selection of four or five of these event types can be played most months.

Extra Ops Style Description
ExtraOps-Marathon.png Marathon Single-player Players work their way across multiple maps, covering three different difficulty levels.
ExtraOps-Pile.png Rare Boss Single-player A "rare boss" randomly appears as players beat stages, granting access to special unit parts.
Screenshot 20191027-003443.jpg Task Force Single-Player A task-based event where players must build a themed deck in order to bolster their bonuses while facing numerous challenges and negative status effects inflicted against their units.
RecaptureEO.png Recapture Single-Player Players must work their way accross multiple maps while collecting coins and items to trade for unit parts, items, and medals.
20210908 01 09.jpg Search & Destroy Guild Ops Coins are gained as guilds work their way towards the center of the map. Prizes are purchased from the Guild Ops Shop.
ExtraOps-United.png United Front Co-operative Players fight together to gain coins. Prizes are purchased from the United Shop Total Rewards are given depending on the entire playerbase's cooperation.

Defunct Ops

Although playable in past times, ops of these types no longer appear within current event rotations.

Extra Ops Style Description
ExtraOps-ScoreAttack.png Score Attack Competitive The final enemy gains power the more times it is beaten. At the end of the event, boss parts are awarded to the highest-scoring players.
ExtraOps-Extension.png Daily Ranked Competitive Prizes are awarded to the highest-scoring players at the end of each day.
ExtraOps-Basegame.png Snatch Wars Guild Ops Guilds fight for control of the map. Boss parts are awarded to the groups holding the largest areas at the end of each day.
ExtraOps-Melee.png Crank Key Co-operative Players work to defeat enemies, acquiring crank keys, medals, and avatar icons as their combined kill counts grow higher.
TryLine.png Try Line Guild Ops Coins are gained as guilds work their way towards the center of the map. Prizes are purchased from the Try Line Shop.

Exclusive Points

MSA currency Exclusive Points.png

MSA currency Exclusive Points.png Exclusive Points are a currency exclusive to this mode, however they cannot be spent directly and reset at the end of each event. Instead they are used as a unit of measure, rewarding the player for reaching specific milestones. EPs are generated depending on mission outcomes, as well as Completion Rank, and are further influenced by presence of Expert Units in the active deck and use of Reward Up (percentages affect the base values of EP rewards for any given stage). Expert Units can be set up at the Soldier Camp for guild mates to use (bonuses from duplicate units stack) - each unit can only be hired once a day from other players.

The icon representing EP changes depending on the event, though it retains its distinctive silver disc appearance.

Expert Units

Certain units are flagged as "experts" during each event, and add extra Exclusive Points at the end of each mission. These flash while building your deck, making them easy to spot.

Exactly which units are experts depends on the current event. Typically the selection includes:

  • Current Super Rare pre-acquisition / box / step unit (highest bonuses)
  • Current Rare pre-acquisition unit / Pack Shop (second highest bonuses)
  • Last month's Super Rare and/or Rare pre-acquisition unit (slightly lower bonus)
  • Previous Extra Ops boss (lower bonuses)
  • Various units, typically a max of 3 (lowest bonuses) - usually, the Rare unit that can be unlocked in the EO is one of these expert units.

Pressing the Expert button in the Extra Ops menu displays icons next to the current set of experts:

MSA event points increase.png Increases points gained per victory by X%.
MSA event power increase.png Unit has increased power and costs less AP to deploy. Best experts have higher AP reduction.
MSA event gold enemy increase.png (Daily Ranked only) - Increases the chance of golden enemies appearing each stage.
MSA event deck attack increase.png (Snatch Wars / Try Line / Search & Destroy only) Increases the damage of all units in that deck.
MSA event progress increase.png (Score Attack only) - Soldier moves further with each victory (bosses may be fought more often).
MSA event rare boss.png (Rare Boss / Recapture only) - Increases the chance of the Rare Boss' appearance rate.
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Extra Opsv t e
Mars Attack Jupiter King's Extra Ops Mummy's Score Attack!! Ptolemaic Attack Pirates Attack Golden Soldier Black Future CODE : ASSAULT The King of Weapons
Metal Slug Alice Zombie Parade Alien vs. Morden Boy Memories Sand Locker Halloween Train Agent Sally Mutation War Food Army! Destroy the Tower
Invader Girl Operation Ikari Santa Trap Merry Christmas! Queen's Battle Flying Ace Crazy Drive!! Food Army! 2nd X Day Pharaoh Rebirth
Chocolate of the Dead Signal Red Power of New Versions Signs of Curse Tough & Cool Wild Edge Pirate's Ghost Amadeus Revenge Snatch Wars Jungle Monkeys
Rider's High Green Monster Mad Scientists Snatch Wars Season 2 Break In The Shell Maximum Evolution Next One Snatch Wars Season 3 Clash of the Worlds Bicycle Maiden
Glow in the Dark Snatch Wars Season 4 Double Face Last Resort No Limit Rising Iron Snatch Wars Season 5 Silent Assassin Supply Lines Eternal Way
Snatch Wars Season 6 Dancing Brave Blood Runaway Royal Identity Cross Over Fate Snatch Wars Season 7 White Breath Out of Control Same Direction Snatch Wars Season 8
Time Collision Fall of Disaster United Front Snatch Wars Season 9 Sadistic Emotion Top Prospect Snatch Wars Season 10 United Front the 2nd Revival of Intention Hero of Justice
Snatch Wars Season 11 Kung Fu Guru United Front the 3rd Butterfly Disaster Advance of Fire Beast Power United Front the 4th Protection of the Fortress Fist Invasion Fire Inhibition
United Front the 5th Best Partner One Mind First Rebellion United Front the 6th Growing Ninja Encounter of Unknown Try Line 1st United Front the 7th Hot Trap
Sky King Theory of Evolution Try Line 2nd Dark Invitation United Front the 8th Tropical Battles Strange Town Auto Battle United Front the 9th Begin Training
Try Line 3rd Destruction and Regeneration Unknown Snow United Front the 10th Sword of Allegiance Try Line 4th Code of Conduct United Front the 11th Escape Plan Try Line 5th
Great Flower United Front the 12th Christmas Wishes Daughter of the Dusk Ace United Front the 13th OneMan Army Try Line 6th The Successor United Front the 14th
Bloom Disaster Guardians of Morden United Front the 15th Killer Scythe Try Line 7th On the Bad Road Pain of My Heart United Front the 16th Memories of Mirage Try Line 8th
Material Affection United Front the 17th Tiny Super Girl Like a Bird Ancient Code United Front the 18th Mad Assault Crew Try Line 9th The Divine Move United Front the 19th
Shinobi Hunter Task Force 1st ACE in ADVERSITY United Front the 20th Freestyle Try Line 10th Under City United Front the 21st Punk! Punk! Punk! Task Force 2nd
Mars Sweeper United Front the 22nd Scary Halloween Party Try Line 11th Task Force 3rd Four Samurai United Front the 23rd Gluttony of Disaster Task Force 4th From Me to You
Try Line 12th Return of Hope United Front the 24th Secret In My Eyes Task Force 5th The Moth Try Line 13th Beautiful Fighter United Front the 25th White Combat
Task Force 6th Silent Evolution United Front the 26th Returning Task Force 4th Jumper Try Line 14th Insanity Ahead Task Force 7th Absolute Defender United Front the 27th
Lunatic Providence Try Line 15th Blue Fire Task Force 8th All Creation United Front the 28th The Executioner Try Line 16th United Front the 29th Freedom
Guardian of the City Justice of Summer Task Force 9th If/The Beginning Portless Communication Lonely Mate Try Line 17th United Front the 30th Girls be Ambitious Task Force 10th
Halloween Forest Try Line 18th United Front the 31st Space War Task Force 11th Perfect Doctor Blue Christmas Pirate Christmas Try Line 19th 2021 New War!!
United Front the 32nd Task Force 12th Sand Rabbit Try Line 20th Because of Love United Front the 33rd Re:Merge Scrap Brain Try Line 21st Omen
Shakety Empty United Front the 34th Stray Ghost Task Force 13th One Cut Try Line 22nd Accidental Coincidence United Front the 35th Freedom Mission Task Force 14th
Burning Diamond United Front the 36th Task Force 15th Ugly Friend Try Line 23rd Road to Everlasting Summer My Beach Task Force 16th Gray Tiger United Front the 37th
Cat Alyst Search & Destroy 1st Deep Water Task Force 17th Sand Dance Trick or Treat Search & Destroy 2nd United Front the 38th My Little Forest Task Force 18th
Dark Mirror United Front the 39th Silence Snow Task Force 19th Great Fortune United Front the 40th Resurrecting the Giant Search & Destroy 3rd
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Navigationv t e
Game Modes Another Story | Attack!List of Standard MissionsList of Elite Missions | Battle and Team Battle | Combat School | Extra Ops / Guild OpsList of Extra Ops | Online | P.O.W. Rescue | Rank Match | Special Ops | Ultimate Mission
Features User Profile | Level and EXP | VIP | Build UpLaboratory | Unitsby IconTeamsUnobtainable | Stats | Itemsby StatsSpecial ItemsStatus StrengtheningEvent Items | GuildList of Guild Raid Stages | Daily Login | Daily Quests | Events | Power-Up | Quests | Mystery Crank | Treasure Hunt | Shops | Dream Lottery | Beginner Support Campaign
Extras Patch Notes | Music | Update History | Event Schedule
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