Terraforming Mars

Terraforming Mars launched in October 2018 and has been consistently expanded ever since. The game has received five paid DLC expansions: Hellas & Elysium, Prelude (December 2020), Venus Next (November 2023), Big Box Promo Pack (February 2025), and most recently Colonies (January 22, 2026). The Colonies DLC introduced a full colony system, interplanetary trade, new corporations, and 49 new project cards — a substantial expansion of the base game. Beyond major DLC releases, the developer has maintained an active patching cadence throughout the game's life. Since January 2026 alone, three patches have shipped (January 29, March 19, and April 7, 2026), with the most recent bug fix arriving on June 9, 2026 — just weeks ago. The April 2026 patch notably added full Steam Deck compatibility. No specific future DLC has been announced, but the developer has been consistently expanding the game for over seven years and shows no signs of wrapping up. The April 2026 patch also referenced "an important announcement" made on the game's Discord, which may indicate upcoming plans — though the content of that announcement is not available here. All six listed DLC items are released, so there is no concrete unshipped content visible on the store. However, given the long-running, active update history and the very recent release of a major DLC in January 2026, the game is clearly in an ongoing state of developer engagement.