What am I missing about adding modules?

Is there anyway when viewing 'my marketplace items' to simply say "create game from this module"? There doesn't seem to be a search integrated with the "create game screen" to fetch just your bought modules, it seems to just dump everything into that right hand bar. I must be missing something obvious because this seems like such a basic use case.

Not sure I understand. If you click on any items in "My marketplace Items" it takes you to the marketplace page with a create game button. Are you talking about something else?

When I click on the item I get the same page as the purchase page saying "You claimed your free package" cmd+f search for 'create' finds nothing on the page to create a game from the main package, however, I   can  create games from the art asset and addon packages that came as part of the deal. I would think the main module should have the create game function.

Fistful of Flowers is not a Roll20 module, it is an Addon and an Art Pack. Go to a game you have created and check the Addon's section to add it.  " This adventure includes an addon. To add to a new or existing game, add via the Game Details Page. On the Game Details page, scroll down to the Game Addons section. Select the desired addon from the dropdown menu and then click add to game. Everything from the addon will be available next time you enter the game." Not all modules are Roll20 modules. Especially the smaller ones like Fistful of Flowers. 

Ah ha! That would do it, thank you for that clarification. When I read this I thought that was optional if you wanted to add it into an existing game not create a new game from it.

Edit: ninja'd! Too slow. :) "A Fistful of Flowers" is not an adventure module, which is why you don't see a 'Create New Game' option for it. You can add its content to any already created game as an Addon . Compare that to the "Lost Mine of Phandelver", which is  a Module :