Edit: The game consists of ~500 audio files in MP3 format. Their size are ~45 MB. The project size is ~75 MB. The main problem actually is that the game size is ~370 MB, I don't know it's because of the audio or something else. Spoiler: Some ideas Regarding reducing the size of the audio files: I prefer to shrink them and make their file type OGG, but MP3 or any other format is fine, if it's going to reduce their size considerably. I converted them to low-quality OGG files using a software called Format Factory (I'm wondering if there's a better way), not all of them shrank, actually some of them got bigger. I tried the same thing, but this time their type was MP3. Most of them went down to half their size, and I don't hear much difference in the quality. But it would take me many hours adding them to GM, that's because the function audio_create_stream works only with OGG files. I'm thinking of letting the user download them separately or be able to customize them, as they are taking most of the size of the game. I don't know why the game size is so big (~345 MB) when the GMX project folder is only ~75 MB I have never read about textures before. Maybe they play a role in the size of the game.