By John Ostapkovich

PHILADELPHIA (CBS) – Sales are “bulging” at Shenandoah Studio, a Philadelphia-based software company, thanks to to its debut product, a Battle of the Bulge wargame for the iPad.

The game, a turn-based simulation of the December 1944 German offensive in the Ardennes, went on sale in Apple’s App Store December 13th and sold better than expected.

CEO Eric Lee Smith says players can either face-off against an agile A.I. or human opponents connected through the Apple Game Center.

“In terms of the total development effort, Game Center was a very minor part of it, and it works flawlessly all over the world.  I’m playing people in Sweden and Finland, Lithuania and Dallas, Texas, and all sorts of god-forsaken places.”

Smith fired up his iPad, hooked to a large monitor, to play turns in four games he had running against remote opponents. Shenandoah may expand this game with iPhone and Android system versions, and has a Rommel in North Africa game under construction.