Seems very interesting tho. Maybe pre-generate the three "prompts" that you show when I open the page, and load them from cache when I select them? At least I can see how it should work.

edit: in 2d the map loads, in 3d it doesn't load. But when it works in 2d it's VERY COOL!

Here's my example: https://mused.com/map/sim/3129/roman-civil-wars-of-the-1st-c...