M2 Co., Ltd.(Japanese: 有限会社M2?) is a Japanese video game developer and publisher, best known for handling emulation of re-released games, such as some Sega Ages titles, Virtual Console titles for Nintendo systems and the 3D Classics series for the Nintendo 3DS. M2 has spent much of their recent time working for Konami, creating not only arcade compilations, but also an entirely new set of games for WiiWare under the ReBirth moniker.