It's easy to use, beautifully tutorialised, and hugely fascinating.

Rock Paper Shotgun

I just finished playing and my mind is blown. I spent most of my time staring at the screen, smiling like an idiot.

Dan & Matt

[Universe Sandbox] is one of the coolest things I've used on Vive so far.

Tom Marks, PC Gamer Assistant Editor

Most epic moment - increased the mass of the sun when it suddenly flashed insanely in a giant supernova. Epic touch.

Take on Mars developer

...a vast improvement over the original. ... an incredibly enjoyable simulator.

Oprainfall