Structure Deck: Machina Mayhem is the sixteenth Structure Deck to be released into the TCG. It is the TCG version of Structure Deck 18: Machiners Command. It introduces the Machina Archetype for the first time to the TCG. It focuses partially on Union Monsters. The differences from Machiners Command are the removal of Formation Union, Combination Attack and Wave-Motion Cannon, which were replaced by a second Armored Cybern, Solidarity and The Big Saturn.

• English Set Name: Structure Deck: Machina Mayhem
• TCG Set Prefix: SDMM
• TCG Release Date: 23 February, 2010
• Cover Card: Machina Fortress
• Includes 40 cards:
  • 1 Rulebook
  • 1 Deluxe Game Mat
  • 1 Dueling Guide

TCG Set Card Ratios:
TCG

TCG Card Galleries:
1st Edition
English - French - German - Italian - Spanish

Unlimited edition
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TCG Set Card Lists:
English - French - German - Italian - Spanish

• SDMM-EN001 Machina Fortress (Ultra Rare)
• SDMM-EN002 Machina Gearframe (Super Rare)
• SDMM-EN003 Machina Peacekeeper (Super Rare)
• SDMM-EN004 Scrap Recycler (Common)
• SDMM-EN005 Commander Covington (Common)
• SDMM-EN006 Machina Soldier (Common)
• SDMM-EN007 Machina Sniper (Common)
• SDMM-EN008 Machina Defender (Common)
• SDMM-EN009 Machina Force (Common)
• SDMM-EN010 Kinetic Soldier (Common)
• SDMM-EN011 Blast Sphere (Common)
• SDMM-EN012 Heavy Mech Support Platform (Common) x2
• SDMM-EN013 Cyber Dragon (Common)
• SDMM-EN014 Proto-Cyber Dragon (Common)
• SDMM-EN015 Green Gadget (Common)
• SDMM-EN016 Red Gadget (Common)
• SDMM-EN017 Yellow Gadget (Common)
• SDMM-EN018 Armored Cybern (Common) x2
• SDMM-EN019 Cyber Valley (Common)
• SDMM-EN020 The Big Saturn (Common)
• SDMM-EN021 Machina Armored Unit (Common)
• SDMM-EN022 Prohibition (Common)
• SDMM-EN023 Swords of Revealing Light (Common)
• SDMM-EN024 Shrink (Common)
• SDMM-EN025 Frontline Base (Common)
• SDMM-EN026 Machine Duplication (Common)
• SDMM-EN027 Inferno Reckless Summon (Common)
• SDMM-EN028 Hand Destruction (Common)
• SDMM-EN029 Card Trader (Common)
• SDMM-EN030 Solidarity (Common)
• SDMM-EN031 Time Machine (Common)
• SDMM-EN032 Dimensional Prison (Common)
• SDMM-EN033 Metalmorph (Common)
• SDMM-EN034 Rare Metalmorph (Common)
• SDMM-EN035 Ceasefire (Common)
• SDMM-EN036 Compulsory Evacuation Device (Common)
• SDMM-EN037 Roll Out! (Common) x2