It is a 3D cubic labyrinth in which you don't see where your ball is (but you have the plan of the labyrinth so you have to listen to the sound it makes when moving the cube).
I had the pleasure to try and it is really nice .There are several levels of difficulty and once you have finished your cube, you can exchange it with other people to get a new one

If you want more information, just click :https://www.ulule.com/inside3/
PS : I may try to make an event so people could discover this in Leicester. If you know anyone who could be interested, share and tell me
