StrategyCore has an interview with a few of the develepers of UFO: Cydonia’s Fall. The game is a remake of the popular XCOM: UFO Defense game made by Microprose in 1993 with a few positive changes.
XCOM: UFO Defense was a turn based strategy game where you played as XCOM, a secret agency tasked to defend the world from an alien invasion. Some features of XCOM: Ufo Defense included characters that level up from combat experience and skill usage, a very large research and manufacturing tree, base construction, interception of UFOs with aircraft, many types of ground based missions and tactical squad based combat.