@raxo2222 the highest I can go without crashing is 110x204 (22440 tiles), could you revise your guide for zone sizes with this new information?
Yes.
In these zones you want to build cities on KBOs and stars. In Transtellar you have to make choice between Interstellar and Plasma map categories when settling.
In those two zones you should place KBOs/Stars terrains, in such way that cities would never steal plots from each other.
There would be 2x2 KBO object with Outer Solar System/Transneptunian space cutting trough middle of it.
KBO; Outer Solar System
KBO; Transneptunian space.
Transneptunian has Jovian map zones on KBO terrain, but no need for them to be bigger than 2 tiles per KBO - 13 tiles.
Transtellar has fairly big stars up to 3x3 in size (Plamsa category for Star terrain) - 15 tiles.
These zones utilize only single map category in them.
Orion Arm is more uniform than Transneptunian space - 11 tiles.
Milky Way mirrors Cislunar space with Galactic Core - 11 tiles.
Local Group is very uniform (single square features) - 7 tiles.
Virgo Cluster is very uniform and has (dwarf) galaxy features lumped in groups. - 7 tiles.
Due to extreme uniformity you can place single line of cities, 15 each of them utilizing 3 radius square.
Observable Universe is extremely uniform - 7 tiles.
Unobservable Universe is extremely uniform - 7 tiles.
Hyperspace - Cities can be placed inside zone - 7 tiles as to not steal tiles from Unobservable Universe.
This means 85 tiles thickness in total.
200 tiles in height would be used.
Changed to 85 tiles for part beyond Outer Solar System.