Terraforming Mars version C2.2.1 has been released for use with VASSAL v3.7.10 or above. This has just a few minor bug fixes; there was one card, [X39], which was missing its Science tag, and 2 cards, [X45] & [X47], which weren’t properly marked as having no tags. Apologies if anyone had been waiting for the promised fix to [X39]; it kind of slipped my mind!