We want to do a RPG on garrysmod, it's interesting and we can accomplish most themes with it.
Things you cannot vote for:
DeadFall
STALKER
Fallout
Crussaria
StarWars (Already being done)
hl2 (Already base theme, overly used)
http://www.forums.hypergamer.net/server-discussion-and-ideas/hgn%27s-underdone-rpg-vote-your-theme (http://www.forums.hypergamer.net/server-discussion-and-ideas/hgn%27s-underdone-rpg-vote-your-theme)!/msg75432/#msg75432
Err.. That covers all the themes lol...
Zombies!? (Deadfall)
Post apocalyptic? (Stalker/FO)
Future? (Starwars)
Cant think of anything original :3