Backfirewall Original Soundtrack produced and composed by Teho & Gregory Terlikowki. Backfirewall is a 3D narrative adventure set inside of a smartphone. The player embodies an update assistant whose job is to update the phone. Only problem is : the current OS, OS9, is not so happy about being deleted and replaced. After learning that the update will kill you too, you will have to team up with OS9 to try and reboot the system in order to avoid the update and survive.