Game audio

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Does anyone know how I can put the game audio as an echo so to speak? If you don't understand me, here are two comparative videos: this one with normal audio youtu.be/X9kkJZoLeU8 (the video is mine) and here another one with the audio I want to be heard youtu.be/3178c9ljcKQ (the video is from homer of steel) thanks for reading this