Pause Duke Nukem 3D and enter the follwing codes:
Effect Code All Items press A, C, D, C, and then press the lower right corner of the screen two times. All Weapons and Maximum Ammunition B, A, D, A, D, D Instantly Kill All Enemies A, C, D, A, B, D, A, B, C, D, C, B, B, D, A Invincibility (You need a 'web link' cart before you can do this code.) A, C, D, D, A.
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