| Metalfoes CombinationThe Dark Illusion · 073 | The Dark Illusion | 073 | Super Rare | €0.05 |
| Metalfoes CounterThe Dark Illusion · 072 | The Dark Illusion | 072 | Common | €0.02 |
| Metalfoes CrimsoniteThe Dark Illusion · 045 | The Dark Illusion | 045 | Rare | €0.12 |
| Metalfoes FusionThe Dark Illusion · 061 | The Dark Illusion | 061 | Super Rare | $0.15 |
| Metalfoes GoldriverThe Dark Illusion · 023 | The Dark Illusion | 023 | Rare | €0.09 |
| Metalfoes MithriliumInvasion: Vengeance · 040 | Invasion: Vengeance | 040 | Ultra Rare | €0.08 |
| Metalfoes OrichalcThe Dark Illusion · 044 | The Dark Illusion | 044 | Common | €0.03 |
| Metalfoes SilverdThe Dark Illusion · 022 | The Dark Illusion | 022 | Common | €0.04 |
| Metalfoes SteelenThe Dark Illusion · 021 | The Dark Illusion | 021 | Common | €0.02 |
| Metalfoes VanisherBlazing Vortex · 021 | Blazing Vortex | 021 | Super Rare | €0.06 |
| Metalfoes VolflameThe Dark Illusion · 024 | The Dark Illusion | 024 | Rare | $0.09 |
| Metal GuardianMcDonald's Promotional Cards 2 · 010 | McDonald's Promotional Cards 2 | 010 | Rare | $8.00 |
| Metalhold the Moving BlockadeYu-Gi-Oh! The Dark Side of Dimensions Movie Pack · 030 | Yu-Gi-Oh! The Dark Side of Dimensions Movie Pack | 030 | Ultra Rare | €0.11 |
| Metal IllusionistRage of the Abyss · 008 | Rage of the Abyss | 008 | Super Rare | €0.21 |
| Metallizing Parasite - LunatiteDark Crisis · 074 | Dark Crisis | 074 | Rare | $0.22 |
| Metallizing Parasite - SoltiteAbyss Rising · 034 | Abyss Rising | 034 | Common | €0.09 |
| MetalmorphYu-Gi-Oh! Forbidden Memories promotional cards · 003 | Yu-Gi-Oh! Forbidden Memories promotional cards | 003 | Prismatic Secret Rare | €0.05 |
| Metal Reflect SlimePhantom Darkness · 094 | Phantom Darkness | 094 | Ultra Rare | $0.01 |
| Metalrokket DragonExtreme Force · 008 | Extreme Force | 008 | Rare | €0.10 |
| Metal ShooterYu-Gi-Oh! GX Card Almanac promotional cards · 002 | Yu-Gi-Oh! GX Card Almanac promotional cards | 002 | Super Rare | $0.34 |
| Metalsilver ArmorMagician's Force · 037 | Magician's Force | 037 | Common | €0.03 |
| MetaltronusLegacy of Destruction · 069 | Legacy of Destruction | 069 | Super Rare | €0.12 |
| Metaltron XII, the True DracombatantMaximum Crisis · 025 | Maximum Crisis | 025 | Super Rare | $0.23 |
| MetalzoaYu-Gi-Oh! The Falsebound Kingdom promotional cards · 002 | Yu-Gi-Oh! The Falsebound Kingdom promotional cards | 002 | Prismatic Secret Rare | $2.57 |
| Metalzoa XRage of the Abyss · 006 | Rage of the Abyss | 006 | Super Rare | €0.33 |
| MetamorformationThe Dark Illusion · 060 | The Dark Illusion | 060 | Super Rare | €0.08 |
| MetamorphortressYu-Gi-Oh! The Dark Side of Dimensions Movie Pack · 027 | Yu-Gi-Oh! The Dark Side of Dimensions Movie Pack | 027 | Ultra Rare | €0.15 |
| Metamorphosed Insect QueenLegendary Duelists: Ancient Millennium · 008 | Legendary Duelists: Ancient Millennium | 008 | Super Rare | €0.15 |
| MetamorphosisPharaonic Guardian · 090 | Pharaonic Guardian | 090 | Common | €2.90 |
| Metaphys Armed DragonDuelist Alliance · 003 | Duelist Alliance | 003 | Common | €0.09 |
| Metaphys AscensionCybernetic Horizon · 076 | Cybernetic Horizon | 076 | Common | €0.06 |
| Metaphys DaedalusCircuit Break · 024 | Circuit Break | 024 | Rare | €0.13 |
| Metaphys Decoy DragonCybernetic Horizon · 018 | Cybernetic Horizon | 018 | Common | €0.08 |
| Metaphys DimensionCircuit Break · 075 | Circuit Break | 075 | Rare | $0.11 |
| Metaphys ExecutorCircuit Break · 027 | Circuit Break | 027 | Super Rare | $0.11 |
| Metaphys FactorCircuit Break · 059 | Circuit Break | 059 | Common | €0.04 |
| Metaphys HorusSecrets of Eternity · 049 | Secrets of Eternity | 049 | Ultra Rare | €0.13 |
| Metaphys NephthysCircuit Break · 025 | Circuit Break | 025 | Super Rare | €0.22 |
| Metaphys RagnarokCircuit Break · 023 | Circuit Break | 023 | Super Rare | $0.23 |
| Metaphys Tyrant DragonCircuit Break · 026 | Circuit Break | 026 | Rare | €0.15 |
| MetaverseCircuit Break · 076 | Circuit Break | 076 | Rare | €0.10 |
| Meteonis DrytronGenesis Impact · 032 | Genesis Impact | 032 | Ultra Rare | €0.06 |
| MeteorainMagician's Force · 044 | Magician's Force | 044 | Common | €0.09 |
| Meteor Black Comet DragonInvasion: Vengeance · 041 | Invasion: Vengeance | 041 | Ultra Rare | €3.17 |
| Meteor Black DragonPremium Collection Tin · 004 | Premium Collection Tin | 004 | Super Rare | $0.46 |
| Meteor DragonMcDonald's Promotional Cards 2 · 008 | McDonald's Promotional Cards 2 | 008 | Rare | €0.29 |
| Meteor Dragon Red-Eyes ImpactInvasion: Vengeance · 028 | Invasion: Vengeance | 028 | Rare | €1.38 |
| Meteor FlareAbsolute Powerforce · 067 | Absolute Powerforce | 067 | Common | €0.06 |
| Meteoroa DrytronThe Infinite Forbidden · 076 | The Infinite Forbidden | 076 | Common | €0.04 |
| Meteor of DestructionFlaming Eternity · 041 | Flaming Eternity | 041 | Rare | €0.46 |