PSP - PlayStation Portable - M
- M.A.C.H.
- M.A.C.H. Modified Air Combat Heroes
- Macross Ace Frontier
- Macross Triangle Frontier
- Macross Ultimate Frontier
- Madagascar - Escape 2 Africa
- Madden NFL 06
- Madden NFL 07
- Madden NFL 08
- Madden NFL 09
- Madden NFL 10
- Madden NFL 11
- Madden NFL 12
- Mahjong Fight Club - Zenkoku Taisen Ban
- Mahou Shoujo Lyrical Nanoha A's Portable - the Battle of Aces
- Mai-Hime Senretsu!
- Major League Baseball 2005
- Major League Baseball 2K10
- Major League Baseball 2K12
- Major League Baseball 2K6
- Major League Baseball 2K7
- Major League Baseball 2K8
- Major League Baseball 2K9
- Makai Senki Disgaea 2 Portable
- Makai Senki Disgaea Portable
- Mana Khemia - Student Alliance
- Manhunt 2
- Maplus - Portable Navi 2
- Martial Arts - Capoeira Fighters
- Marvel - Ultimate Alliance
- Marvel - Ultimate Alliance 2
- Marvel Nemesis - Rise of the Imperfects
- Marvel Super Hero Squad
- Marvel Super Heroe Squad
- Marvel Trading Card Game
- Mawaskes
- Me and My Katamari
- Medal of Honor - Heroes
- Medal of Honor - Heroes 2
- Medal of Honor Heroes
- Medal of Honor Heroes 2
- Medical 91 Portable
- MediEvil - Die Rückkehr
- MediEvil - Resurrection
- MediEvil Resurrection
- Mega Man Legends
- Mega Man Maverick Hunter 10
- Mega Man Powered Up
- Megaman Maverick Hunter 10
- Megamind - the Blue Defender
- Memories Off
- Memories Off - AfterRain
- Memories Off 2nd
- Memories Off 5 - Encore
- Mercury
- Mercury Meltdown
- Metal Gear Acid
- Metal Gear Acid 2
- Metal Gear Solid - Digital Graphic Novel
- Metal Gear Solid - Peace Walker
- Metal Gear Solid - Portable Ops
- Metal Gear Solid - Portable Ops Plus
- Metal Slug Anthology
- Miami Vice
- Miami Vice - the Game
- Michael Jackson - the Experience
- Micro Machines V4
- Midnight Club - L.A. Remix
- Midnight Club - LA Remix
- Midnight Club 3
- Midnight Club 3 - DUB Edition
- Midnight Club L.A. Remix
- Midway Arcade Treasures - Extended Play
- Military History - Commander - Europe at War
- Mimana Iyar Chronicle
- Mimana Iyar Chronicles
- Mind Quiz
- Minna No Golf 2
- Minna No Golf Portable
- Minna No Golf Portable 2
- Minna No Tennis Portable
- MLB
- MLB '06 - the Show
- MLB '07 - the Show
- MLB '08 - the Show
- MLB '09 - the Show
- MLB 07 - the Show
- MLB 08 - the Show
- MLB 10 - the Show
- MLB 11 - the Show
- MLB 2005
- Mobile Suit Gundam - Gundam vs. Gundam
- Mobile Train Simulator
- ModNation Racers
- Moe Moe 2-ji Taisen Ryoku Deluxe
- Moeru Mahjong - Moejong!
- Monster Hunter Freedom
- Monster Hunter Freedom 2
- Monster Hunter Freedom Unite
- Monster Hunter Portable
- Monster Hunter Portable 2nd
- Monster Hunter Portable 2nd G
- Monster Hunter Portable 3rd
- Monster Jam - Path of Destruction
- Monster Jam - Urban Assault
- Monster Kingdom - Jewel Summoner
- Mortal Kombat - Unchained
- MotoGP
- MotorStorm - Arctic Edge
- Motorstorm Arctic Edge
- MTX - Mototrax
- Music Quiz
- Musou Orochi
- Musou Orochi - Maou Sairin
- MVP Baseball
- MX vs. ATV - On the Edge
- MX vs. ATV Reflex
- MX vs. ATV Unleashed
- MX vs. ATV Unleashed - On the Edge
- MX vs. ATV Untamed
- My Merry May With Be
- My Spanish Coach
- Myst
- Mystereet Portable
- MyStylist
- Mytran Wars