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Makura, Frontwing

Malt

Mamazones

Mamekkusei

Mameneko no Atelier

Manjuu X

Manor Stories

Maranyo Games

Marble Candy Soft

Margarine Kengoya

Margary Games

Maron☆Maron

Marvelous Inc., CIRCUS, Circus Metal

Masukuinu

Masys Co., Ltd.

Matcha-soft

Matenrou

Matsuri Kikaku, SPEED

Max Q

Mebukisoft

Media Saurus

Medusa

Mega Romance

Mega Romance, Coremagazine Co.,Ltd.

Melanchol

Melonpan

Melty Lip

Menou

Menu

Meowgical Games

Mer Rouge

Mercurius

Mermaid

Meropuri

Mesu Danshi

Meta-Doll

MeyasuBako

MicroGroove

Midori no Teikoku

Mijinko

Mikan Hata

Mikazuki Chou

Mikezoutei

Milk Candy

Milk Crown

Milk Pudding

Milk Spring

MilkEmpire

Milky Farm

Mill Soft