Text-based, extremely simple -- basically something to do very casually, and thus should go up relatively quickly.
Has a structure similar to Caverlasting -- skeins of some kind within a supergrid, where the passageways between them require completing the "tile".
Completion requires finding the orb room and inserting the materials it requires. This will unlock passageways to other tiles on the supergrid (seeded by the relationship of the two nodes) and also give the player a homogeneous orb item.
the materials it requires is some target within the procgen materials system -- random items are scattered around a tile, can be combined in various ways including layered versions. The orb room requires whatever the top layer is.
The rest of the hivh-level recipes will distribute the "scanning" functions, which make this game actually playable.