This made me nostalgic for GLTron. After a round of that, I decided to look for a more up-to-date lightcycle game but, surprisingly, there aren't any that capture the look of the 80's Tron movie with a similar level of faithfulness.

Armagetron was roughly contemporary with GLTron, but has a zoomed out perspective that doesn't capture the claustrophobic feeling of not knowing what's on the other side of that trail you're next to. There are also games based on the lightcycle sequences from the newer TRON movies. I have nothing against them, but they're not the same thing.

Seems like an underserved audience might possibly exist for this sort of thing.