I tried making a Playtomic account that can see all the stats but not actually change anything.
site: http://www.playtomic.com
username: PirateKartKontributors
password: 2012inone

After logging in, click "2012 IGF PIRATE KART" on the left.

The per-game data is in Level Metrics. Once you switch to that you can check the boxes for the different "counter metrics" to see how much each game got clicked for each version. (viewing it as values is a little nicer than percents).

Unfortunately, the very high numbers of plays on a few of the v1.0 games isn't indicating popularity, but rather that I screwed up and those games didn't launch, so people clicked them multiple times.