Harvest is a red promotional card released in the fall of 2021 by FryxGames. It costs 4 Mega‑Credits (M€) and carries two important tags: Plant and Event. To activate it, a player must have at least three greenery tiles already placed on the board, representing areas that have been terraformed. When the condition is met, the card grants 12 M€ to its owner, a sizable economic boost that can speed up production projects or improve Mars' temperature and oxygen levels. The card also bears the "Promo x37" mark, indicating it belongs to a limited run of 37 copies distributed as a giveaway or direct purchase on FryxGames' online store between September 1 and November 30, 2021. While primarily a collector's item, its effect works fully within the base game, suitable for casual or competitive sessions. Like all Terraforming Mars cards, Harvest fits into Hand Management, Open Drafting, Set Collection, Take That, Tile Placement, and Variable Player Powers mechanics, offering many strategic angles. The greenery‑tile requirement makes it most useful in later stages of the game, when most players have already invested in vegetation projects. In short, Harvest serves as a thematic economic boost, perfect for players who enjoy marrying resource production with the planet's green expansion. It is both a collectible and a mechanically valuable addition to the game.