Terraforming Mars: BGG User‑Created Corporation Pack is a creative expansion that brings three fan‑made corporations to the game. The pack was born from a contest where more than 400 ideas were submitted; the chosen ones — Arcadian Communities, Splice Tactical Genomics, and Recyclon — offer fresh ways to play, each with unique powers that shift the game’s dynamics. The core goal stays the same: colonize Mars, manage resources, build infrastructure, and turn the planet into a livable world. Hand management demands careful card selection, while open drafting lets all players pick the best options from a shared pool, creating direct competition. Tile placement remains central, as corporations must place production and infrastructure tiles to optimize benefits. Variable player powers ensure each corporation provides a distinct experience, significantly influencing strategy. The component set includes corporation cards, infrastructure tiles, and additional resource tokens, maintaining the visual and durability quality expected of an official expansion. Gameplay stays balanced, with a playtime of about 120 minutes and support for 1 to 5 players. If you already master the base game and want to try new approaches or simply enjoy the creativity of others, this expansion is a great addition. The language may still require translation, but the mechanics are accessible and fun for fans of deep strategy and sci‑fi themes.