Standard rules: Eat foods, grow longer and fatter.

Score: = Basicscore x Level x Length
Slow Level = 1
Normal Level = 2
Fast Level = 3
Basicscore: = 10 + 2xSpeed (Level 1)
= 24 + 2xSpeed (Level 2)
= 36 + 2xSpeed (Level 3)

Keyboard: Cursor Keys to play
Spacebar to Pause

Shortcuts: A = Move Left
D = Move Right
W = Move Up
S = Move down

Player 2: ADSW

Functions:
(1) Change background and snake color.
(2) Fullscreen.
(3) Walls around board.
(4) Speed setting.
(5) Two players mode.