I recently discovered that my Pipes! Yahoo! Widget was within the top ten most popular YW with the tag "game". Which made me look back at the Snake game I made for Scratch, which was still in top 10 "most loved" scratch games.
Thinking about this, I realize that the most "popular" games I make are always Pipes, Snake, and JetLag. There is nothing earthshattering about these games. Nor is there anything original in the slightest.
But if the world wants to play Pipes, Snake, and JetLag, then I shall give it to them, although I do think that if I ever manage to complete a YW version of Space Trader, it'll be a big hit, but again won't be original in the least.
One of my favorite parts of these games is that they are, compared to most games, rather ugly. But when an ugly game is played heavily, you know that it has something about it that transcends what it looks like.
I just wish I could bottle whatever it is that makes these games popular.