Saddam Moves South is an operational level two player wargame covering a hypothetical Iraqi invasion of Saudi Arabia in 1990. The assumption here is that after the Iraqi army overran Kuwait in the first week of August 1990, Saddam Hussein continued the offensive to grab the vital oilfields of Saudi Arabia. In response, the United States leads a coalition of states to stop the Iraqis and then retake lost territories.

The game system is based on that of Desert One War (Modern War #44), that models ground, air and amphibious operations. For the Coalition, the central game system is Air Transport Points (ATP) that represents strategic airlift capability. Each hex on the map represents 35 kilometers from side to side. Each turn of play represents anything from three days of intense combat to ten days of refitting. Ground units represent regiments, brigades, divisions, and groups of irregulars. Special operations forces represent unconventional warfare activities. Aircraft units represent anything from one to four squadrons, depending on the quality of air force and operational tempo.