fail is right

Aside from what the others have mentioned, there is an issue with the 'restart'. You've placed the button at the bottom of the screen, so if you don't immediately jerk the cursor upwards you fail again.
Otherwise not challenging or fun.

Bad.

This needed major fixing.
There's no music,which instantly brings your score down a ton,second it had no sound effects what so ever.And countless more of things needed to be fixed.But overall,it's not completely terrible for your first flash game.And please,before you or anyone publishes something,think about this question.Can I play this myself without getting bored? Think what others enjoy then add it in.

GOOD

I liked it. the one problem i found was no music D: but I bet your next game will be much better! :D thank you gravitor

Fairly Decent

It would have been much better if the snake went faster though.

That's ok

Not very good, but it's your first game...