As we can all see how many players are in a game, in the name of your hosted game, put the number of players that you intend to start the game with and adhere to that number such that people know if the game is full, maybe a '+' sign if anonymous//random people are welcome.
<game name>-<#>(+)
example
FunTest-4 (four players, no random people)
Funzzor-6+ (six players, anyone welcome)
MasterB-1 (1 player... solo)