At the moment it's more like a chill idle game in this sandbox island. But I will definitely explore crafting a different mode that pushes the player to build faster and take more risk.
Adding a bonus for stacking towers could be really satisfying as high rewards comes with higher risks.
There are only a few blocks that is harder to balance and they only unlock late game. So having a more varied lineup of blocks earlier, could unlock different strategies and improve the gameplay.
All of them are great ideas really, thanks a lot!