Major Nelson has kindly started tallying the top Xbox LIVE games for Windows Phone on his site (before it was only the console).

While nothing groundbreaking, it's kind of nice to get insight into what sells and what doesn't e.g. SIM3 is at #13, despite being, you know, terrible (see review). The top five games though were:

  1. Sonic the Hedgehog 4
  2. Doodle Jump
  3. geoDefense
  4. Hydro Thunder GO!
  5. Rise of Glory ('Deal of the Week')

Sure enough, the top four are part of the 'must-have-games' campaign and we have to agree that they're all pretty much worth it.

Source: Major Nelson; Thanks, Karl C, for the heads up