Razer roof.
There are 10 new levels available for Portal 2, but only if you have a Razer Hydra PC controller.
They controllers cost $140/140. We’re investigating a UK release date and price now.
Hydra is a motion-sensing controller that looks like two Wii nunchuks and has a separate ball sensor that perches on your desk. It’s coloured moody black and surprise green.