Age of Steam Expansion: Atlantis & Trisland

About this expansion

Age of Steam Expansion: Atlantis & Trisland is a full-size, full-color mounted expansion for 3–6 players, with an approximate play time of 120 minutes. It includes two distinct island-based maps designed for Steam and Age of Steam.

On Atlantis, players face the challenge of building a self-sustaining rail network across a mythical island. The giant city of Atlantia sits at the center, while towns and cities line the coast, creating an expensive and fiercely competitive struggle to connect the island’s interior with its shores.

Production is very limited on Atlantis, and financial danger is never far away. The map was originally considered too harsh and unforgiving, then later revisited and adjusted to make it slightly more approachable—though bankruptcy or complete hopelessness can still be just around the corner. Atlantis supports 3–6 players and is intended for those ready for an especially demanding game.

Trisland offers a very different experience. Designed exclusively for 3 players, it features an elegant, perfectly symmetrical map and streamlined gameplay optimized for that player count.

• Atlantis: a brutal 3–6 player map centered on limited production, costly development, and intense competition.
• Trisland: a symmetrical 3-player-only map with a classic Steam/Age of Steam experience.
• Format: a full-size, full-color mounted expansion that folds to fit inside either the Steam or Age of Steam box.

Trisland includes very few rule changes, with its adjustments specifically addressing shortcomings in three-player Steam/Age of Steam games. Together, the maps in Age of Steam Expansion: Atlantis & Trisland provide two sharply contrasting ways to play.