Sega 3D Classics Collection is a Nintendo 3DS game developed by M2 and published by Sega which is a compilation of nine ported Sega games. The game was released exclusively in Japan on December 18, 2014, and is set to be released in North America in April.
Instead of the games being emulated, the code for the games were rebuilt so they could allow new features not in their original versions like stereoscopic 3D.
List of games
3D Thunder Blade - Arcade 3D Power Drift - Arcade 3D Galaxy Force II - Arcade 3D Fantasy Zone II W - Arcade 3D Puyo Puyo Tsu - Arcade 3D Altered Beast - Sega Mega Drive 3D Sonic the Hedgehog - Sega Mega Drive Maze Hunter 3-D - Sega Master System Fantasy Zone II: The Tears of Opa-Opa - Sega Master System Fantasy Zone (Unlockable) - Sega Master System