environmental citybuilder prototype

Cat Flynn 318aa1486f grid with gradient #3		2022-12-06 19:15:07 +00:00
half-earth	grid with gradient #3	2022-12-06 19:15:07 +00:00
.gitignore	add gitignore	2022-12-03 16:26:13 +00:00
gdd.md	add gdd	2022-12-03 16:01:14 +00:00