Game to crowdsource tax evasion investigation

Crowdsourced game like Foldit to help HMRC investigating tax evasion.

No_avatar_small Submitted by Alex P
National Hack the Government
What are your ideas to code a better country?

got the idea when I've seen this: https://pbs.twimg.com/media/BhRW46RCcAAe7HS.jpg:large

I haven't found open data sets for this.