Castle of Doom takes you to a dark page of human history. It is 1944, Hitlers armies have conquered most of Europe and just as the allies begin to fight back Nazi scientists come up with the ultimate weapon. While investigating one of their laboratories you discover that the Nazis have managed to harness supernatural forces and have created a demon army.
Allied forces stand to be destroyed unless you can escape from the nazi experimental facilities, also known as the "Castle of Doom".
On your way to freedom you have to battle your way through various demon filled levels, which get harder as you progress.
Castle of Doom is a 2D action shooter with good graphics and great emphasis on enjoyable gameplay. Unfortunately the lack of score-keeping, holds the game back and doesn't allow players to fully enjoy it.