There is a game in development. Some of you may have heard of it, most probably have not.
Xenonauts is a game that is heavily based off of the original X-Com games. It will have all of the same elements from turn-based ground combat to real time air combat to keeping the worlds nations happy/safe and funding you. If you have played any of the first three X-Com games then you will know exactly what to expect, if not then well......they are pretty cheap on STEAM.
It is important to remember this game is still in development and has no set release date yet but they are aiming for later this year. I personally hope they take all the time they need to make a great spiritual successor to the original three X-Com games.
You should check out their site for more info and while you are there you can pre-order the game to help out with development costs and get access to early client releases. Then you can play around and give them feedback and report any bugs to help them even more. They are very interactive with their community of followers and respond all the time in their forums.
Check it out: Xenonauts!