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. You don't need a system to be in the dropdown
list to play it; use 'Other Games' and put the name of the system in the
listing text, all the forms of it someone might use. Actually play the
game. Ask those you know who play the game to do likewise. You don't need a system to be in the dropdown list to have a character sheet for it; ask in the sheet-request-thread-consolidated-mk-ii thread for someone to help you make or make a character sheet that can
then be added to the list of character sheets available to users for
their games. You don't need
a system to be in the dropdown list to ask the writers of a system to
think about licensing their system for use with the Roll20 VTT; talk to
whoever produces the system you're interested in, tell them how
interested you would be in being able to have an Official Character
Sheet and Official Compendium available on Roll20. Ask those you know
who play the game to do likewise. 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.