Hello, Zanzlanz! Remember me from my Mine Blocks review? Yup, I've returned to review this game of yours!
First off, I enjoy the addition of new game modes, though the 2-player mode isn't all that great. The players have to hog the keyboard in order to compete. Another gripe I have is that the coins sometimes spawn right next to one of the boundary walls, or, even worse, right in a corner of 'em, making them harder to get than need be. Also, the snake you control in the game moves a tad too quickly, making it hard to grab coins in general, and is also why I can't stand the coins that spawn near the boundaries.
However, despite the flaws, you did revolutionize the snake game with the game modes, and a catchy, fitting tune. Heck, even the graphics are a bit better than the original game while still maintaining the old style of it! You, sir, have earned a well deserved 3/5, and a 5/10. It'd be even higher if you could iron out the flaws, though that goes for all games.
Best of luck for any potential future snake revitalizations!