Enemy Engaged: RAH-66 Comanche vs. KA-52 Hokum

Enemy Engaged: Comanche vs Hokum is an attack helicopter simulation game. The game was a follow up to Enemy Engaged: Apache vs Havoc, and interconnectable with it. The source code has been released and has since then resulted in a heavily modified game. Source: Wikipedia, "Enemy Engaged: RAH-66 Comanche vs. KA-52 Hokum", available under the CC-BY-SA License.