The Jovian Lanterns promotional card debuted as a reward in the 2018 Dice Tower Kickstarter and later appeared in the Colonies expansion (as C18, without the "SPACE" tag and costing 20). It works seamlessly with any mix of the Terraforming Mars base game, whether or not you include other expansions. Its core action is straightforward: spend 1 titanium to add 2 floaters to your tableau. Floaters are treated in the base rules as "other resources" and were first defined in the Venus Next expansion. This effect can speed up energy production or satisfy card requirements that demand floaters, making it a flexible tool for players who like to fine‑tune their engine. As part of a set of promotional cards, Jovian Lanterns features artwork depicting massive Jupitarian lanterns, reinforcing the sci‑fi vibe of the Terraforming Mars universe. No extra components are required beyond the card itself, so it fits neatly into the existing box. With a modest complexity rating (3.125/5), it’s a light addition ideal for those already comfortable with the core rules and seeking a bit more strategic depth without bogging down the game. Whether you play solo or with a group, the card slots into the standard ruleset without any special modifications, keeping the gameplay smooth. In short, it’s a small yet handy supplement that adds more resource‑management options and thematic flavor for fans of the series.