About time eh? We have set up a sandbox where users can upload their games to test out before they go onto the main site. This is especially useful for testing WiiMote Functionality (API). When you are uploading a game, there is now an option to "Upload to Sandbox" and once you've done that, you can see your sandbox game in your Profile. Once you have uploaded a game, any subsequent game you upload will automatically overwrite the previous version.
Now go test!