Heroes in the Sky is a MMO airplane simulation shooter game developed by GameUS and published by JC Planet in March 2015. The game takes place during the Second World War and players have to choose between the Axis Forces formed by Germany, Italy and Japan and the Alliance Forces formed by England, France, USA and the Soviet Union. Contrary to other flight simulation games that feature complex controls, Heroes in the Sky has a very user friendly approach and it is easy to jump in on the action from the get go.There are a wide variety of things to try out while playing Heroes in the Sky. Over five hundred historically accurate planes are available to soar the skies and can be improved through the upgrade system. Co-Op missions allow up to eight friends to band together and complete the objectives in the challenging co-op mode. Another interesting and fun PvE element of the game are the scenarios. The PvP arenas feature team Deathmatch and Survival Mode for anyone wanting to battle it out there.The progression system is quite straightforward. Players get a hangar that is full of their planes. By leveling up you get the chance to unlock better and stronger fighter planes. Each of the plane has its own stats and upgrades. Items that are acquired can also be added to the plane in order to further increase its performance. On the other hand the skills of the game are shared among all the planes. They are separated into four categories: the Common, the Fighter, the Gunner and the Bomber.There is a store present that provides premium content and some items do give performance boosts so it can be pay to win unfortunately. However, as the game is Free to Play and because of its unique premise I would suggest players to try it out, especially if they enjoy airplanes and the World War Two feel it brings.Minimum System RequirementsOperating System: XP, Vista, Windows 7 Processor: Pentium 4 2.4 GHz or AMD 2500+ Memory (RΑΜ): 512 MB Hard Disk Space: 700 MB Graphics Card: GeForce FX 5600 or ATI Radeon 96003D Client Shooter