Most ‘virtual reality’ helmets plunge users into an unreal video-game world – but a new version mixes the unreal into the real world in a ‘living dream’.

The helmet only works in St Johann’s Park in Basel, Switzerland – but wearers explore a mixture of the ‘real’ park, seen via cameras, and 3D illusions created by computers, including ghostly, glowing grass, surreal insects and strange visions in the sky.

Lifeclipper is an entirely new kind of entertainment, plunging users into parallel worlds using a high-powered computer backpack.