My latest world is an experiment with 10% land cover, 5 degrees north (Custom Latitude mod), 50k polar equator distance. And my standard tropical "survival light" experience: no temporal stability or storms, 5 day grace timer, keep inventory, no class exclusive recipes and no true winters... (yes it somehow affects creature weight IN MAY and in the tropics which is BS). + because of the limited amount of land double deposit spawn.
Spawned on a ~250 by 120 block slate island (ugh) with only a few patches of crops (2x flax, 1x amaranth, 3 peanuts). Stayed alive on a diet of 70% bamboo shoots and 30% scraps of goat/chicken/mini deer caught in the trench around my pitiful starter garden and killed by the resident sun bear.
2x surface copper, no tin, 1 useless shallow cave system, a patch of red clay and a whopping 19 papyrus.
At least there was enough bamboo, tree ferns, and kapok bushes/trees to get started and then some. Oh and very high hematite, but I wouldn't have known that if not for what happened (see below)
Then a raftable ~500 blocks west LAND AHOY a larger island!
Minerals: enough surface copper, 1x surface tin, prospected tin, 2x surface lead + prospected lead,1x surface brown coal WITH BLACK COAL below.
Natural bounty! Dry to wet gradient! Acacia (w/ 2x resin), 2 ebony trees, 1 olive tree (6 cuttings), 1 pomegranate tree (9 cuttings!!) TWO BREADFRUIT TREES (one tree 7 cuttings first go + 2 almost instantly), enough papyrus, plenty rice and amaranth, some cassava, 3/4 stack of high fertility soil and flowers (not enough yet, but at least some).
Oh and the surface rocks are claystone and chert. My favorite tropical material combo for a copper/bronze age insulated 0.3x spoilage 1-floor house with a roof terrace, covered with those stick layers for copper/bronze age bonus points.
Layers of sticks you say? Covering two terraces of interior dimensions 7x5? On a tropical island with two and a half kapok trees and none of those temperate bushes? Are you mad mister Mobius? Well you will see. That island was not the only stroke of luck...
To top it off there was a cave with a Y 90-ish translocator, taking me 13k blocks north (thanks to the no ocean translocators mod) to just south of 30 degrees north!
The lush zone, the warm start. Where the devs decided to have the largest biodiversity in plants. (unlike IRL where it's the equatorial zone)
Enough sticks, mushrooms, plenty berry bushes, flax, spelt, onions, FLOWERS (why so few flowers in the equatorial zone), bald cypress, oak, walnut, peat.
And there is a LIMESTONE AREA!! all of the north/western quadrant. Leather working! Mortar! And of course as a building material for a late game house if I get to that (I rarely do)
+ Artisan trader (decorated vessels!)
+1 1/2 stacks of high fert found so far (enough for a year round growing climate)
+ 4 cabbage seeds, which I can farm thanks to the Shadehouse mod.