Six regions in one scene

The first map was a 92 metre clearing. It was far too small. The game now has a 720 metre home map and five outposts, and bases in all of them keep running while you are elsewhere.

A sparse grid

A dense grid across that much ground would waste memory on empty space, so the logical grid became a dictionary that only stores cells something occupies.

Scenery as instances

Scattering plants and rocks as individual objects pushed scene load past ten seconds. Non-blocking scenery is now drawn as GPU instances, which brought load times back down.

Anything that assumed one small map broke along the way: job claiming, storage lookups, raid targeting. Each got a region check.