salamu alaykum everyone. My question is : "As a game developer/software devloper/advertiser is it permissible to use background tones or songs as this is what attracts customers and users? "
Wa alaykum salaam,
Since there are many types of tones and tunes that can be used, not all are halal. However, many that are used by Islamic finance companies or Islamic companies tend to be okay. You should just make sure that the specific sounds you wish to use have been reviewed by a scholar.
Check out halalbeats.io