The keys:

• D, C, K, M: Move tank (for real men/women)
• Cursor keys: Move tank (alternatively)
• Space or Control: Fire
• 1: 1 Player start
• 2: 2 Players start
• 3: Insert coin slot 1
• 4: Insert coin slot 2
• Keypad +: Increase frame skipping rate
• Keypad -: Decrease frame skipping rate