Moved to the Forum Tutorials and FAQs section since this is a question and not a suggestion.
Joke responses aside, there are not any forums intended for members posting games that they have created, unless you would be fine with making a thread in the Fan Works section. But otherwise, posting a thread in any of the "regular" sections (i.e. General Gaming, General Discussion, Entertainment, etc.) is prone to come off as advertising, which is prohibited in those sections because it only serves as spam. Feel free to continue promoting your game as a blog entry, or post a thread in the Fan Works section, provided that it is the only thread made there for game updates and discussion.
I'll leave this thread open a little bit longer in case you have any further questions.