The first two sets are "Wings of War - Famous Aces" (Nexus Editrice 2004) and "Wings of War - Watch your back!" (Nexus Editrice 2005). The first one includes a selection of fighters with personal colors of the most renowned aces of World War I: the planes are Fokker Dr.I and Albatros D.Va for Central Empires and SPAD XIII, Sopwith Camel and Sopwith Triplane for the Allied. "WoW - Watch your back!" adds other fighters and some two-seaters allowing bombings, recon missions and other special scenarios. "WoW- Burning Drachens" (Nexus Editrice 2005) is the newest set in the World War I series. It includes drachens, AA guns, machine guns, air-to-air Le Prieur rockets, trench systems, and optional altitude rules. "WoW- Burning Drachens" includes rules for solo play as well as multi-player dogfights, bombing runs, and strafing or recon missions. Each set allows 2/4 people to play; the number can increase using more than one set.