For now lake and sea nodes unlock other nodes but there will be different waters. Piranha and shark should not be buyable they should be a by product of other nodes. I will check if they are buyable I’ll change it. Thank you for your feedback.
I was definitely able to buy Shark and I believe Piranha as well, so yeah that makes sense that it's a bug and should be an auto-unlock / difficulty increase instead.
Yeah you have to buy it currently. We are changing it to be a byproduct of progress. We are working on an update for here and also for a steam demo. All be fixed there. Hope we can see you playing again. Thank you again for taking the time.
