the most stressful for you? I believe that Survivor, HG and Stars are the most. Since I haven't played stars, i believe that Survivor is the most stresful, if u r not in a good position and as far u go, more stresful and exhausting is. With my previous experience with Survivor I can say one, the moment in which u start to feel safe, that's most likely the moment when u will end being blindsided.
Hunger is the most stressful game. You can't get a decent sleep during it at all. I don't know why but I take it very seriously like I am in the game myself and my real life depends on it so I do everything I need to get further even if its just a few more minutes. Life in hunger is precious