I am a game developer, and have a made a game, that is inspired by Tron Lightcycles, although it is slightly different. It is called 'Achtung, die Kurve!' (it means, 'Attention, the curve!' and is German
You are a curve and have 2 controls: left and right. You will bend to the left, or right, when you press your left or right key. On random intervals the curves will drop holes where you can try to sneak through. There are also powerups, that can enhance your curve, influence the other curves or everybody. The fun thing is to play it together with 4, 5 or 6 friends on 1 keyboard, but you can also play it against the computer.
It is definitely not the same as Tron lightcycles, but if you like lightcycles, I think you will like this too. I post it so you guys can try it out and maybe you like it. You can play it on http://www.flashkurve.com/play.html
and you can find additional info on http://www.flashkurve.com/