I'm gonna wait for Steam version
Free work is ok if it's not-commercical project, such as modding for game. If it's commercical and they're going to make money off your work then it's unfair.
Chernobyl VR Project is a brand new title by The Farm 51, which is said to combine video games with educational and movie narrative software. It is the very first virtual tour around the Chernobyl and Pripyat area, compatible with multiple VR headsets, such as Oculus and PlayStation VR and HTC Vive.
The most important decision is the declaration of donating part of the proceeds from the sales of the Chernobyl VR Project to foundations helping the victims of the disaster.In association with the Polish-Ukrainian Open Dialog Foundation, we will select organizations to provide support to (10, 30, or 60 percent of sales profit, depending on the application version). In doing so, we hope that we contribute to helping the victims, and that the initiative will give our project another educational and social dimension.
Chernobyl VR project is scheduled for release in June on Oculus Rift. Get more information at the official website.