Originally developed in 2014, here is the multiplayer alpha for a Half-Life mod featuring the king himself. - Duke Nukem! Released now as more of a "historical" novelty. Take a peak behind the curtain and see what might have been.
The Multiplayer test build of Duke Nukem Cataclysm. Released as-is. Features numerous bugs. Will likely randomly crash. Released, as the main description says, as more of a novelty or a curiosity.