Gates of Vienna is a two-player game covering the campaign of 1683 in which an Ottoman army besieged that Habsburg capital only to be defeated by a multi-national Christian counterattack. It was the turning point in the centuries-long Habsburg-Turkish wars.
The Gates of Vienna system is based on the CSR award-winning Red Dragon Rising system. Players conduct actions encompassing discrete combat, logistical, intelligence and other operations. Each turn represents a month. During each turn, players take various actions, alternating one at a time with between each other. That smoothly represents the overall pace of operations in the era while giving play a fast tempo.
Each unit represents anything from an individual regiment to an entire “wing” of an army (approximately 1,000 to 10,000 men). Each amp hex represents 12 miles.