Oh this is amazing!
I really love the music, somber yet playful, the lore was a nice touch, the general finite resource management is well done in the game loop, as you try to well reach the objectives while not starving. The sound effects and general movement is also great.
The only thing that felt off was the new island generation, it feels a bit too dizzying for the new lands going in, but perfect for leaving land.
I could see this being a part of a larger place with trying to find old ruins, or other travelers, dialogue, providing some meta-level progress, uncovering something on what happened before. The low poly aesthetic, the artwork for the upgrades, it... argh, it's just great.
Overall great game! Thank you for submitting in the game jam!