Dino D-Day: The Mod

Video games have already covered what would have happened if the Nazis dabbled in the occult, but how different would World War 2 have been if Hitler had been fascinated with something far, far older? Dino D-Day seeks to answer this question.

Dino D-Day is described as a "prototype" for what will become a full commercial release so it's not all fleshed out yet, but there are indeed Nazi dinosaurs to hunt.

You will need a game from Valve's Orange Box installed to play. Digital Ranch suggests Half-Life 2: Episode 2 is easiest, as others require editing a file to make it work.