In the current release uncompletable games are actually counted as "Completed" games in the statistics. You can easily see this by filtering to just uncompletable games (I've attached a screenshot). You can see uncompletable games are counted in the "Completed" total and the completion percentage. Having thought about this more, I think this is actually wrong, and instead uncompletable should simply not be counted at all (except in the collection total). I will change this in the next release.
RE: Email from Shi9k
In the current release uncompletable games are actually counted as "Completed" games in the statistics. You can easily see this by filtering to just uncompletable games (I've attached a screenshot). You can see uncompletable games are counted in the "Completed" total and the completion percentage. Having thought about this more, I think this is actually wrong, and instead uncompletable should simply not be counted at all (except in the collection total). I will change this in the next release.