Combat flight simulation games can be found on YouTube along with the usual "call of duty"-style arcade shoot-'em-ups. The best FlightSim games stress authenticity and won't let you fly, say, an MiG-15 in a World War II scenario, or ocean going capital ships in a "huge lake." Return to World War I, when the U.S. Air Corps didn't have any native combat aircraft and flew French or British designs with amazing results. (Blip that throttle to get a tad more speed, lead your target, and remember where you are/your altitude!)