There’s some unfortunate news to share today—developer Pushy Pixels of Proton Pulse Rift has announced that further development of the highly regarded Oculus Rift demo has been canceled.

Proton Pulse was an early and well regarded Oculus Rift demo. The demo is most easily described as a 3D/VR version of Breakout Thanks to its simple gameplay, which is controlled only by head movements, Proton Pulse has been the go-to demo for me and many others to get new users (especially non-gamers) familiar with the world of virtual reality.

Developer Pushy Pixels wanted to expand the demo into a full fledged Oculus Rift title and took the project to Kickstarter as Proton Pulse Rift. The project was enthusiastically received by the VR community which helped Pushy Pixels raise $7,099 (236% of its $3,000 goal).

On Monday, Pushy Pixels put out an update on the Kickstarter page announcing that Proton Pulse Rift has been canceled due to “unforeseen consequences.” Pushy Pixels has fully refunded all Kickstarter backers; an admirable decision, especially considering that the developer had to cover Kickstarter’s 5% fee of ~$350 to make sure backers got fully refunded.

You can read the full announcement of the cancellation here:

I would like to begin by expressing my heartfelt gratitude to everyone who supported me, both financially and with encouragement and excitement, over the course of making Proton Pulse into a full-fledged game for the enthusiast VR Community. VR has long been a passion of mine, and the opportunity to make my own game in a VR medium was a thrill for me. What started out as an experiment to sate my own interest turned into a demo, and then promised to be something much more. The fact that other like-minded individuals were excited about it was a wonderful encouragement and kept me working long nights, despite having a full-time day-job and a family.