There are a number of factors necessary for an air combat game to work. For example, there needs to be "air" - that being the concept of working from a certain measure of altitude above the ground in a variety of aircraft - and there needs to be "combat", which should be self-explanatory. However, these elements only provide a baseline level of functionality, and with the variety of games in the air combat genre already saturating the market, extra touches are needed to set new releases apart from the crowd.
