I'll explain it since wpegg is somewhere, hope he doesn't mind.
This is how it went last time: You know how a gift code comprises of four parts? For example, to redeem game X you go to the GOG redeem page and input the code, which looks like VVVV-XXXX-YYYY-ZZZZ. That's four parts, right. wpegg gave each player two parts for two games, like for example he would give part 1 (VVVV) of game (1) and part 2 (XXXX) of game (2) to a certain player, and part 2 (XXXX) of game (3) and part 3 (YYYY) of game (4) to another player; each so that each player knew 1/4 of two game codes when the game began. It was then up to the player to trade and communicate in order to acquire knowledge of all the parts of a certain game code. Does this explain it at all?
For example, player 1 knows the first part of Deus Ex (VVVV- - -), and part 2 of Arcanum (- XXXX - -); he now has to find out who has the rest of the parts, and get them all before someone else does and redeems the game(s).
edit: The one difference compared to last time seems to be that when the game starts, more than one player will have knowledge of a certain part. This is done so that the game wouldn't come to a halt in case one person decides he isn't going to give up his part no matter what, instead holding on to it and "blackmailing" the rest of the players. One particular fellow said he wasn't going to give up his part unless the player who wanted it, bought him a game in return (can't remember if it was a GOG in question or an indie bundle), after which wpegg, who will always have knowledge of all the parts since he's the host and bought the games, made the part public. So don't hoard, people!
Post edited October 08, 2012 by DProject