I thought about this for a bit. How can I make my game be based on decision-based difficulty instead of stress-based difficulty? So one way would be to make the game turn-based. You get X tiles to place before the round goal has to be reached. The problem with this is that the game itself is time-based, as resources are produced over time. One idea would be to stop the time at some limit. This limit increases by a few seconds for each tile placed. This way, the game function can remain time-based, while there is no stress factor anymore, and a challenge still remains. I still have to develop this idea further, if you have any thoughts on this let me know.