Hi , lets me share my old game called "Helicopter realistic simulation" in BGE
This is my start point , a log of bugs xD , and I'm new to BGE
In this version , you can control you are helicopter like real in game or like a real pilot
Sorry for bad english , I'm Myanmar :) , its good to see you !

Controls
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-W and S to control power
-E to toggle engine
-Arrowkeys to control helicopter
-Mouse to control camera

Features
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-Realistic world
-Optimizing physic and script
-Sandbox
and much more

Tips
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-Dont shutdown engine while flying , its can cause dead