By Jove, I think I've cracked it. I think I've found the way to break through the geek stereotype that dogs the games industry. It's hot, it's topical and it screams "audience participation". Pay attention, Sony, this one's for free - Computer Game: The Musical.

Before you scoff, hear me out. The thought struck me when I was idly listening to Elaine Page on Radio 2 while waiting to go to a ballroom dancing class. How, I thought, humming along to Masquerade from Phantom of the Opera, have I become this? What happened to the up-for-days, Radio 1-obsessed, rage against the machine, ennui-saturated emo kid I used to be?

I blame the media. If the scores of Make Me A Musical SuperStar variety show TV programmes have affected me to the extent that I've laid down my indie girl NHS specs and my raver light sticks and picked up my tap shoes, surely there is a massive potential market out there begging for a totally integrated, fully interactive, utterly camp computer game that deals with the staples of the West End show: cheesy love songs, over-the-top kick lines and long flowing dresses. I promise you, if I've been turned, you can bet your bottom dollar there are thousands, nay, millions, who'll make this idea a hit.

All the necessary technology is there: dance mats for the waltzes, guitars/drums for the orchestra, Wiimote for the conductor, MTV's Music Generator for young Andrew Lloyd Webbers, console cameras to capture choreography, microphones for the moments when you just have to break into song. Unfortunately, traditional musical fare doesn't feature as many explosions as your average computer game (a new niche?), but the good news is that their plots are just as flimsy. Simply swap rocket launchers for romantic stories, add some comic relief (preferably of the bawdy variety) and you're dancing.

You could have spin-offs, like the management sim Musical Producer, where players try to balance the egos of the cast, control the vision of the director, manage the crew and get funding from the Arts Council. Or Rehearsal Boot Camp, where budding young starlets who don't quite make the grade can learn to sashay and sing.

Using the internet connections of modern consoles, there could be meta-musical projects, where virtual directors could audition virtual talent and hire virtual set builders. Machinima movie makers could broadcast the shows, and publishers could cream a pretty penny off the top of soundtrack sales.

Computer Game: The Musical is the ultimate killer app. And before I come up with another one, I'm off to practise my jazz hands.

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