The growing Sega Genesis collection on the 3DS is expanding once again, with Sega announcing a 3D edition of the original Ecco the Dolphin. During the 16-bit generation, Ecco was known for its unique gameplay, high difficulty and unbridled terror. Like other announced 3DS Genesis games, Ecco will feature save states, graphics filters and, of course, 3D. It will also allow players to try out different international versions of the game. Ecco is expected on the Japanese eShop on June 26 for ¥600 ($6.30).

Sega's website also revealed that Galaxy Force 2 is planned for the 3DS. There are also two empty slots, suggesting that we can expect at least two more re-released Genesis games before Sega finishes its 3DS promotion.

Thus far, we've seen Super Hang-On, Space Harrier, Altered Beast and Sonic the Hedgehog released on 3DS in Japan. Space Harrier, Altered Beast and Sonic the Hedgehog have all been rated by the Australian Classification Board, suggesting the 3DS lineup will head west before too long.

This article was originally published on Joystiq.