Sumeria was originally submitted to me as a 2-4 player game. I played the 2-player version several times and really liked it.
During play-testing, one of my blind playtesters found a weakness in the two-player game that made the second city-state worth less than the third (and the choice of influence counters pretty meaningless). Since the 2-player version also added to the cost of the game (since it needed extra wooden pieces), Dirk and I decided to drop it so the game was only 3-4 player. Later in play-testing a slight change to the 2-player rules fixed these problems, but it stayed out of the game as released.
Until now! I've decided to release the 2-player version of Sumeria as a promo expansion at Essen. What's the deal? Buy Sumeria from me at Essen and you'll get the limited edition promo expansion free! It includes 6 extra trader pieces in each of the four player colours, a sticker to add to the board to show a fourth player turn per round and a rulesheet (in English and German again). All wrapped up in a plastic baggie.
If you've already got a copy of Sumeria (well done :-) ), the expansion will be available to pre-order from my website shortly, and if I have any left after Essen they will continue to be available there. To keep the cost to a minimum, I've decided on baggie packaging rather than a small box, this means it probably won't be available in shops ever, but I hope it will only cost £2 plus postage and packaging from my website.
This is my first time making both an expansion and a convention promo, it will be interesting to see how it goes...