Ancient Power: isometric strategy game with pixel art

Something I’m working on. It will be a pixel-art isometric city builder with strategy elements. Current art is placeholder to test gameplay.

Building sizes test

Here are some of the main ideas:

Outside of the radius of power of the central pyramid, dark lands can appear.
In these lands, dark beings wander.

Four different people live in the four quadrants of the pyramid. They are based on four elements.
Water people fish, and can irrigate farmland.
Earth people chop wood, and farm.
Fire people chop wood, and are the warriors and guards of the kingdom.
Wind magic people convert dark wanderers and construct pyramids.