Kokosan posted a Flash Player 10 game on Kongregate called Snake Box that is a 3D take on the classic snake game. Rather than just being on a flat grid, you now navigate in a loop around the edges of a cube.
Its a good use of the 3D Effects in Flash Player 10, and they did a good job with keeping the cube rotated smoothly. Unfortunately for me, the controls are a bit twitchy, but still a good game.
Snake is a fantastic addicting game, there’s a similar version out there where you can rotate your snake in loops, as well as play a harder version where the snake moves much faster. It’s available @ http://www.playonlinefreegames.net/20002-Snake.html