There was a time not to long ago when the market was absolutely flooded with World War 2 shooters. This changed when Infinity Ward made the somewhat gutsy decision to move their franchise shooter Call of Duty into the current era with Call of Duty 4: Modern Warfare. After that the copycats followed and the number of World War II shooters dropped significantly.
Indie developer Tripewire Interactive has ignored the trend towards modern combat. Heroes of Stalingrad is a realistic World War II shooter set in and around Stalingrad as the Nazi forces invade the Soviets. As with the original Red Orchestra the focus is on creating a tense and calculated multiplayer experience for hardcore shooter fans.