Interesting submission, didn't really feel like a metroidvania to me, I guess the definition is not really set in stone but having access to all progression mechanics from the start is probably the best i can point at.
Putting that aside, really enjoyable game. Some mechanics could use some polish or redesign, like for example digging out hole on top most layer without gathering all resources basically cuts off that resource field. I feel like explorers could automatically mark first found spot for convenience sake, they're really cheap so it doesn't feel like waste tbh and right now you kinda have to follow them to find what you want.
Artwise, chicks are cute but UI is veeeeery rough, but servicable. One major problem i had was constant flickering of tooltip on research button, trying to access it required lucky click which isn't very fun. Music was nice, I think fitting for a relaxed gameplay like this one.