The games dropdown menus exist to help standardize the options available
(example: 4E vs. 4th Edition vs. D&D4). No matter how many
games are listed, some may not make the cut. Games are added to the list
periodically. This ensures obscure listings gain greater visibility
when sorted via the Other Games option and helps keep away “empty” search listings for underrepresented titles. If
you feel a game should be listed, encourage your community members to
play and post often. The more community attention a title receives the
more likely it is to be added to the list. Splitting the listings into separate ones also falls under this protocol. The Devs have stated the Suggestions
forum will never be a viable way of getting games into the dropdown
menu, so don't be surprised if/when this thread is closed to release your votes.