The D-Day folio series consists of four separate games, each portraying a portion of the Normandy campaign area. Turns represent two to three days each; the games cover the campaign from the initial landing to the breakout. Each game comes with one map covering a portion of the battlefield at 2.5 miles per hex. The playing pieces represent the regiments and special battalions taking part, plus the multitude of fire support available to them.

The series uses the Fire & Movement system rules, with exclusive rules for each folio. The folios can be combined to display the entire American or British Commonwealth sectors, or into a single giant game on the entire campaign.

Omaha Beach was anticipated to be the worst landing because of the bluffs looming over the strand. The Allied player must muscle troops onshore against the best German infantry in the region, then push forward to link up with the landings on either side. If that can be accomplished, the opposing forces will battle through the constricting bocage country for control of the road junctions in the area, particularly St. Lo.