I started a game and already had 3 turrets placed down, I sold them and started with 10k, after that I was unable to place turrets.
It’s a little bit buggy and UX needs work. A bit of polish up is needed too. Other than that it looks like a decent copy.
I think it would be better to have 5 well done turrets than 20 mediocre ones. Might check it out in the future to see if anything changed.