This has been tried like a gazillion times.  There have been advertising on free sites, posters, stickers, Facebook, Twitter, some tried to get it on X-Box, etc.  The point is, it's an almost 20 year old game that hasn't been updated in forever.  There is no money being put to advertising because well, its a free game.  You need money to put into it to get good advertising.  WIth games like League of Legends (free), WoW,  flash games, cell phone games, etc - no one wants to play an outdated 2d spaceship game.   My suggestion, enjoy it while it lasts.  Play in other zones like EG and TW.