Sonic 3D Blast

Sonic 3D Blast was released on the Sega Mega Drive in the mid nineties. It was the first three dimensional Sonic game. It took the sixteen bit Megadrive Sonic features and made them more spherical. It also added an isometric playing field. The idea of the game is to collect birds known as Flickies by defeating enemies, which will turn into them, and then putting them through a large ring which will then unlock a transporter to take you to the next area.

It also had an enhanced remake for the Sega Saturn.

The first true 3D Sonic game was not until Sonic R was released for the Saturn.