As a suggestion to LL: Produce Xeno Martian Coasters. * It would take maybe five minutes to redo the art to use Xeno colors. * Games with more than four or five colors would be much easier to learn and follow. Yes, This 9-player variant would not be quite the same without the element of two colors vieing for two possible center squares. However, that can be done with a rule: "Variant: You win the game if you finish your tree on the center stack of EITHER the Rainbow or the Xeno color, equated in this list: [list of equalities as shown by the dots on the coasters]." And then the "basic rule" would be to "build a tree on the center of your color squares to win" or however it is phrased in the main rules. * Folks who are attracted to the Xeno colors should likewise be attracted to Xeno coasters; and they WON'T be unattracted to them because they don't match their Xeno stash(es) or because they are "boring colors" or whatever. Perhaps it is harder to add an inventory item than I know, but other than that, I can't see any real reason not to do this. There is already a stocking level issue with Rainbow versus Xeno; therefore, it would be the same issue with coasters, I would guess (I really don't know). But I would expect you'd see higher total sales of all coasters (Xeno or Rainbow) if there was the option. Of course, all of we Iceheads would HAVE to buy both.... ;) Hope this helps; David Artman