SUMMARY
A group of javascript coders attempted to write the smallest possible TRON "lightcycle" game. The result is a game in 219 bytes although, admittedly, the game is rather limited in it's playability. There's only one cycle (you) and it's only meant to be played on the Chrome browser (version 17, to be more precise). As a result, the game is more of a "snake" game then a lightcycle game but... They called it a TRON game and so it is mentioned here.
LINK
219 bytes TRON