Can you name this movie?

It really sounds like "The Gamers: Dorkness Rising," where a group of gamers play in the back of the store and the story jumps between the game table and a spoof of the fictional world in which they are dressed as their characters. In the real world, the main character, a slim balding man, has writer's block for the module based off the current game. The female lead who just joined the group inspires him and eventually by the end he gets the module published.