Well, there's a lot of games on the forums, and most people here are busy making their own. People who hang around to chat here generally are either looking for help/examples/ideas, bug reporting, or talking about the game industry in general.
The arcade is a place people usually hang around to play and talk about specific games, but even then it's rare for people to talk about your games.
Try posting your games to other sites which focus more on playing games rather than developing them. Unless you've done some really cool new effect or epic game there probably won't be many people who stop to comment.