Not everyone can make a great video game - and even fewer can make one in less than 24 hours.
But that's just what 120 games makers are going to try and do in a few weeks, at the 2012 ExPlay Games Jam, hosted by the Wellcome Trust, Science Museum and Pervasive Media Studios.
The Games Jam - held simultaneously in Bristol and London - will give participants 24 hours to make a brand new game on a specified theme.
And yes - it has to be playable.
Details of what theme is involved won't be released until the day of the event - but the winners will get the chance to showcase their game to the public at the ExPlay festival in Bath, which takes place in November.
Think you've got a good idea - or a friend who's handy with code? Check out the Games Jam's website here and sign up.
To take a look at what's possible, this video is of the game Mirrornaut - which was built for GamesJam in 2011.