Announcement: I re-uploaded the Windows and iOS versions, cause I forgot to include .pck in those the first time. If You tried my game and it didn't run, please be so kind and give it another try now.

Using: Godot Engine v3.2.1

KEYS:
Arrows or wasd - move camera.
Mouse left - dig up and drop soil.
Backspace - generate new caves.
Esc - exit game.