Short of Alt+F4 or deleting registry entries, anyway.

Whats up with the Lines not meeting correctly spent 2 hours and there is no Solution to certain Puzzels? Also the Sound is Crackiling Badly on a Premium Sound Card?

I completed the game, got the "thanks for playing" message and also solved the last puzzle with the hearts. The achievement for completing the game has not unlocked.

the same happens in one of the other games of the bundle

I noticed that the "Perfect Game" count on my profile did not match up with my manual count, and it seems like this game is the one that is not being counted by Steam. In fact, after checking the store page for the game, there is a warning on the right side that says: Profile Features Limited This game is not currently eligible to appear in certain showcases on your Steam Profile, and does not contribute to global Achievement or game collector counts. Is there something the developer can do about this?...