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.