From ExoticA

Tunnel Demo (1993, .11 or .12, ECS File)

Review by Glenn Lunder

Aweinspiring intro/demo with just one real effect...but what an amazing effect it is! WOW! You travel down through a tunnel, and the tiles get darker the further you get in and it just looks absolutely gorgeous...and that's when the balls start bouncing at you! Amazingly great and polished. Just fabulous.
I'm sure I've heard that chip-style tune before somewhere, but in a different mix and without those war-drums... hmmm. Anyone? The name 'Tunnel Demo' does not actually appear anywhere in the demo.
tested A1200/030-50/2mb chip, 4mb fast/3.0.