Here's a word of advice – don't play Circle Chain if you're especially prone to hypnosis. We zoned out when we played Circle Chain and when we came to we don't know if we'd been playing it for an hour, two hours or a week.

Partly it's the fault of Circle Chain's music – the kind of looped pulsating ambient noise that gets played on home-therapy tapes for people with low self-esteem (ahem, we heard) and part of it is because Circle Chain is just so bloody addictive. You detonate a circle, it sends other circles spinning out and chain reactions are caused. Also don't play Circle Chain unless you mean it when you say "OK, one last go" because we don't and we were playing the bugger for ages.

Play Circle Chain now