I think that "Trake" is a clever game in terms of the mechanics that you present to players, and I think that it is mostly "Snake" rather than "Tron" (I suppose that's why "Snake" wins with 3/5 letters within "Trake"
). I appreciate the fact that you kept the graphics clean and minimalist within the game, choosing to concentrate more on polished mechanics instead (good choice). I'd scratch the single player mode (unless you add AI) and keep it just as a local multiplayer game, though, because at this point in single player, it's just Snake really. An enjoyable experience regardless!
But here are a few suggestions:
+scratch the shooting mechanic, and change the control for boosting to what shooting was
+change the initial spawn locations of players based on how many players are in the game (symmetrical), now they look a bit wonky and on the left side of the screen (except for four players)
+clean up the look of the menu system some (more in the vain of the assets within the game)
Good luck, and nice work thus far!