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Ultimate Werewolf Legacy
The rules are a tad cloudy if one can just place a room and not take a swan.
It could have been a critical ending to a recent game because of the bonus for least swans but I didn't think about it until later. It was the last room played and it was a grey utility room.
You must take a swan if you match a swan to another one when you place a tile (or if a gray swan on your tile is placed next to any other swan). There's no "may" so it's a must.
the Palace rules wrote:
If a tile is placed so that a swan color in an entrance matches the swan color in an adjoining entrance, the players who own the two adjacent tiles each receive a swan of that color.
Gray swans are wild, and always match their adjacent color.