The game has potential, but it needs some smoothing:
1. I was unable to gather stone.
2. Some objects were awful-paint-graphic (consider updating them as soon as possible).
3. Placing walls was with no blueprint. And you can't go back with it.
4. Also you can jump on two walls on each other. So no real fortress here.
5. Another thing was with food and drink - you can't produce any.
6. And you can't swim over the sea. Instead you are going down to the bottom of the map.
Hope you will develop more and update something soon. I would like to see the result! :)