Yes the game is being worked on at the moment if you look at the developers Patreon.
In order to progress once you get the world map, start training your tentacles by bonding or hunting.
Than click on a new area and start exploring until you can build a royal army which than you can invade a area for more things to work with.
Hope this helps! :)
So the trick is, one has to unlock the Nursing step before the skill tree thing lets you unlock the Royal Army step. But to unlock Nursing, you need to have an injured unit. But if you haven't been over-using the stamina of units so as to injure them (I guess that's how it happens) then you don't have the requirement to advance. Not intuitive at all.
