I think the some of the 2 most popular ones were already mentioned, "logic bulbs adventure" and extensiON, and I think extensiON has a chance at winning
Theres also the game (color...swap?switch?) that has the most ratings by far, because they asked every single person to rate their game. don't know how good the ratings will be, it seemed good but simple and got boring a but fast. well see lol