Your ability to be scared has more to do with your ability to be immersed in the game. Some people need outlast and some people only need minecraft. But also if you play amnesia as it was intended it is very scary. You can also run around a table repeatedly and get a good look at tge monster if you are not in the “horror mood” nothing is scary.
The inverter is a device that converts the DC power from the solar panel to the AC power that homes are wired for.