Have you tried some Screen Recorder, like TuneFab Screen Recorder? I used to record gameplay so that I move it to my YouTube then I share it to my friend.
tunefab.com/screen-recorder
tunefab.com/recorder/record-gameplay.html
Develop games in your browser. Powerful, performant & highly capable.
Try to use some screen recorder, like TuneFab Screen Recorder to record your audio from your computer screen. U can play this game on the computer then recording audio will be better.
tunefab.com/screen-recorder TuneFab Screen Recorder is the best screen recorder for it is not only a screen recorder but also an audio recorder. You can have a try.