here is Tube Second Edition. It's basically the same game as Tube but with much improved graphics by Marcus Losbjer.
Marcus also wrote a few nice songs for the game.
There are 9 new tracks. However they are locked. You must complete a few "challenge" tracks to unlock them all. Thanks to sh3-rg for this suggestion!
I would like to also thank JagChris for the beta-testing and LinkoVitch for helping me about an undocumented feature of U235-SE.