This is an experience similar to Oculus Dreamdeck, so expect about 5-20 minutes of gameplay for the price of a large candy bar.
Right now there are 8 fractals. A code editor is included which will allow users to create their own fractals/shaders and share them with the community. More fractals might be added in later updates as well.
There is a free demo available with one fractal and no editor that should give you a pretty good jist of what to expect.