The festival's most distinguishing feature is that in front of all the bars, shops and many performance spaces that make up the festival's 'streets' they build something of a film set facade. The place becomes something of a cartoon town, and stages and the like are hidden everywhere. Open a phone box and you might find a tunnel to a hidden rave, for example.
And around one corner, I found this (sorry for the crappy picture; in fact the game screen itself was all fuzzy).

So, you pedaled to fire, on a bike mounted on a small 'rolling road' rig. You turned the handlebars left and right to move your ship the corresponding direction. It was set on freeplay with a small button near the break lever, which served as a start button. The bike itself was a typical chunky 1980s BMX; not dissimilar to a Grifter or Mag Burner.
It was silly, but tonnes of fun. I couldn't trump the high score some other raver had set (the pair in the photo are strangers that were playing before me).