Google has made an announcement that has shut down its development of 3D painting app Tilt Brush, marking the latest in a string of virtual and augmented reality disappointments for the firm.

The tech giant acquired the firm behind Tilt Brush, Skillman & Hackett, for an undisclosed sum in 2015, praising its “innovative approach to 3D painting.” At one point, it hired Tilt Brush Artists in Residence.

But on Tuesday, Google confirmed in a blog post that it would halt the development of the product, instead of making its source code available on code-hosting platform Github.