Unrailed 2: Back on Track Officially Released With New Biome and Enemy

Indoor Astronaut is a Swiss indie studio based in Zurich, composed of graduates from ETH Zurich. The original Unrailed! began as a university project before becoming a commercial title. The sequel publishes through Indoor Astronaut and Kepler Ghost.

The new Underground Unit biome is described in the sources as "the secret research facility of the United Railway Bureau." The floating enemy is officially named the "AI Manager of the United Railway Bureau." One source notes this enemy is "difficult to find and even harder to defeat."

The game includes crossover character skins: the crewmate from Among Us, the cat from Cat Quest 3, and Tchia from Tchia. Players can select from four engine types at the front of the train, each with different effects, and equip passive and active skill cartridges such as a jetpack for aerial movement. Visual customization is also available.

Maps are procedurally generated and feature multiple biomes beyond the new one, including the lava-filled Boiler Wasteland and Island IC, which periodically floods due to tides. Clearing a biome lets players upgrade the train with randomly offered options like a collection wagon that automatically gathers materials or a mining wagon that mines nearby resources.

The Steam version is on sale for 2,250 yen until June 19, down from the standard 3,000 yen. The packaged version from Beep Japan includes an early purchase bonus of an IC card sticker. The limited edition adds a board game, an original soundtrack CD, and acrylic character stands of Zam and Kit the Cat, along with a Zam & Shuri Ken DLC set that includes a special hat and backpack.