Hi there!
The playtest is open and will last for about 2-3 weeks. I'm planning to release a patch every week during that time. After that, I'll update the public demo.
Current changes:
New resource - influence
Complete rework of control system. New tiles can be bought for the influence or captured by Watchtowers
Update for deckbuilding and card-drawing mechanics. The deck now can contain duplicates and is emptied when drawing cards to the hand. When the deck is empty, it can be refilled by paying some influence.
6 new cards - Caravansary, Fishing Boat, Shipyard, Azurite Workshop, Sacrifice, Hand of Midas
New neutral buildings - Deserted Tower, Unfinished Construction, Abandoned Caravan.
Random events. Some events simply give resources or increase income, others change the environment (Stonefall and Fire Storm)
Balance adjustments
Camera can now be controlled by moving the cursor to the edge of the screen

After you've done playing, make sure to submit your feedback through the Feedback survey. It will help me find issues and make corresponding changes.
Have fun!
