Hello, I am the author of the game "Chain Reaction" ( https://sibevin.itch.io/chain-reaction ). Currently, the BGM and SE of this game are directly using free materials, but I have always hoped to have an opportunity to create exclusive music for this game.
Regarding the BGM of this game, I set it to be a space, sci-fi or cyberpunk theme melody. Because it is an action game, I think it can be more lively and fast-paced. In addition, as a BGM, it must be able to loop. There are currently 5 timing points that will trigger SEs. 1. When Game Over, an explosion sound is used. 2. When U hits C or H, a sound similar to upgrading or casting magic is used. 3. When alpha splits into multiple particles, a glass breaking sound is used. 4. When alpha is eliminated by C, a sound similar to bubble bursting is used. 5. When an achievement is attained, a tada sound is used. Of course, those are just my current choice, you still have the greatest creative freedom to change anything you want, even add extra BGMs or SEs for different pages or new timing points, as long as it matches the tone of the game.
About the game development part, it can actually do a lot of subtle adjustments and applications on audio in game, such as dynamically change the BGM when certain conditions are met, or changing the volume of the left and right channels according to the position of the mouse cursor, etc. But currently this game only temporarily lowers the BGM volume when the game is over. At the current time point of this jam, it may be too late to add new mechanisms. But for the project itself, we can continue to improve the game experience for various possibilities together in the future. BTW, this game uses the bevy game engine ( https://bevyengine.org/ ), and if you need to compile the game on your own computer, you must set up the rust ( https://www.rust-lang.org/ ) development environment. If you just want to apply new audio in game, another way is to replace the corresponding audio files in the installation directory after installing the game.
There are a few things that may need to be mentioned first: 1. Because this game is a free and open source project ( https://github.com/sibevin/chain-reaction ), the materials used in the game such as images and audio will be as a part of game's source code and released with the same license (GPLv3) for people to download. But you still own the copyright of your work, and can also use separate licenses to release it if needed. 2. This cooperation may not be able to pay fees, but in exchange, your name and work name will be listed on the credits page of this game (the References page in game), and also on the corresponding itch and github pages. If you are interested, please feel free to contact me with discord: @kaitwang.