The Call From Rapa Cosmo

The story starts after a dream in which the player must build a Radio Beacon from a sketch, using the materials provided. If the sketch is lost, a clear photo of the structure still shows how to build it. Once the beacon is started, the event unfolds by waiting until dawn, and sleeping can skip ahead to the next day's dawn. Some steps must be done in a particular order, and some isolated items only take effect in certain cases.

Beings from Rapa Cosmo can be met and traded with. Each artifact can be bought only once per world for 30 experience levels, while selling 16 Space Metal Blocks yields 5 experience levels. Killing even one alien locks the trading system permanently. Aliens regenerate, and Space Metal resists weathering, so it does not rust like ordinary blocks, while the aliens wear out the ship as the story goes on.

The mod adds five structures, a new villager profession with its own trading system, a new creature, a weapon that can be customised, a complete set of armor with matching items, a hat, nine alien artifacts, several block sets, paintings and music discs. Its advancement tree covers the whole game. Localizations are supported in English and French.