Thanks for the feedback, I'm glad you enjoyed it! I had a lot of fun making this one even if I didn't get to do everything I had in mind.
As for your specific points:
- The lag is pretty bad. That's mostly my fault due to poor implementation of certain things, but I won't let Flowlab escape the blame entirely lol
- The lack of set pieces was my biggest regret too. I had at least 10 building types planned for the game which got scrapped for time. Only two (Technically 3) exist at the moment. This is something I'd like to work on in the future
-As for not being able to find any in the world, set pieces give distinct audio cues to clue you into where to find them. This is why stereo is really important for this game. (I'll likely add other ways to find them and settings for those more hard of hearing)