Newly released game, ported under the the GNU GPL2 license. Source code has not been made available. Link developer provides for email support does not exist. These people are stealing from the open source community and you. This application should not be FOR SALE until the source code is made readily available via download link or valid email request. This app is originally written and provided to the community for free. Is it right they can charge you for it? NO. The GPL2 license requires that the complete source code is made available to everyone.