Whack-a-Cake is a game that was built by:

volunteers from the UK tech community as part of the “Children in Need Tech Challenge” hosted at The Oxygen Accelerator in Birmingham.

600 schoolchildren in the Birmingham area were asked to come up with a game idea and the characters that they saw being part of it. The best entries were shortlisted and asked to come to Oxygen and face a “Dragons Den” panel of game developers, designers and local businessmen

It was built in a 48-hour flurry over the weekend. Here’s the full list of people who made it happen.