Try one of the most attractive professions: become an ATC area controller
The Flight Controller is an ATC simulation game and brings one of the most attractive professions of today - Air Traffic Controller to all enthusiasts. Try the challenge of controlling various real world sectors.
You'll go through simple tutorial starting with few airplanes and several main airports. But you'll progress to full area control cooperating with adjacent sectors, restricted areas in your sector, handling emergency traffic, etc. All with different types of aircraft (with different speed). Everything just like in the real life of ATC controllers.
...it's only a bit simplified (or complicated?) having just a single flight level for all the traffic. Sounds like a challenge? Then give it a try! :-)
Enjoy playing the game!
I recommend to play this game on a bigger display - at least 5". The best is a tablet of course.