At the heart of a Reddit thread a few weeks ago discussing "must-have" board expansions was the question, what if the core of a particular game is just a shade of what the real product is?
The thread became quite popular, drawing plenty of feedback regarding specific "must-have expansions" and what they added/fixed to the originals. Among those mentioned was "Prelude" for "Terraforming Mars" and "Embers of a Forsaken Star" for "Xia." In the "Terraforming Mars'" case, game time was dragging out a bit too long to FryxGames' liking. "For us, the game has always taken about two hours to play, a length we are very satisfied."