It's been mentioned before time and time again, but I checked the Submitted Downloads list and there are five games that linger there, waiting to be accepted.
The thing is though, they can't be accepted for various reasons. Either the screenshots don't appear to work, there are too few of them, or the description of the game is appalling.
If you have submitted a game, but are wondering why it hasn't been accepted, open up your profile and view that particular submitted game. The admins will usually leave a comment saying why it hasn't been accepted. If no changes have been made matching the admins requirements after a period of around three to five days, the download will be deleted.
There are occasions though when an admin is too busy to check the submitted download list, and your game might well meet the requirements. Please don't send us a message asking where it is - someone will get to it sooner or later.
THIS ARTICLE might also help you meet the requirements.