I've buyed this game and totally loved it! We're a group of friends who used to play older Civilization board games now and then with 5 or 6 players. Now, this game is made for 4 players, but since there's 6 civilizations playable and few map tiles not used, It would be fairly easy to make it a 5 or 6 player game. The biggest problem is that there's a limited number of building tokens, only 4 packs of technology cards, only 4 color of tokens etc. So, obviously, it would need adding some game pieces. Now, if FFG would sell a small expansion with needed game pieces to make it a 5 or 6 player game, would you buy it?