Techno Base is the sixth zone of Sonic Advance 2, which apparently takes place on the inside of a computer, a rare level theme in the series. The background displays big chips connected by blue and green lines, which all of the sudden turn into a flashing red and then get distorted like a broken TV.
The layout itself is extremely colorful and can get a little dizzy without experience. Huge loops, bridges that disappear momentarily, bumper-covered walls, bumpers that disappear once hit, platforms with electric spikes, weird Badniks and flashing spikes are several of the levels' unique features, and make it amazingly hard to get past the level at high speed. And even worse, Techno Base holds a very difficult boss at the end. Bottomless pits are marked with grids of blue hexagons.
A similar zone, Cyber Track, later made an appearance in Sonic Advance 3.
- Kyura - Bizarre winged bots that fly through the air and fire laser blasts into the ground.
- Flickey - A Flicky-like Badnik that flutters about with a trio of spiked iron balls following it.
- Star - hovering star-shaped bots that spin in place. They are only vulnerable when they stop spinning.