The game, originally developed for Windows phone, seems to be quite difficult to develop further. That's why it will now be free.

https://gamore.itch.io/riverdrive

RiverDrive is an old retro game project from Windows Phone, originally full project, developed with XNA and C#. This version is at early stage, developed using Monogame. We will develop the game further and for the bigger screen.

 Maybe, some day we'll have a better solution available.