I have seen your post in the forum
To post a game, you need to connect on the forum and return on the home page of the site (where there are games)
Under the "browse by" square, on the right of page, you have "submit a game"
And on this page your can post the game, and after you can create a topic on the forum "in developpement" with the ID of the game page.
If you need more help, i'm here :)