Good but a few mods
its a good idea and i think you did it well, but a few modifications and this could be even better:
1) The font, the font colour is hard to see against the background so change that to something that is more visible.
2) The graphics, i have no problem with sprites being used, however the arena (or woteva you wana call it) looks poorly drawn, simply improve that somehow.
3) Tedium, the game will get boring after a while, try adding powerups/downs like speed up or lose tail and players will be more interested.
4) Music, i have no problem with the music either, just other players may so try adding a few tracks for selection.
Make those changes and you will have a great game.
Tamenese
2/5