One thing I like about GC/Wii is that is not stingy with memory cards, at least in my experience. I've been using two third party (generic) ones, 20 megabytes, for each region, and for quite a few years already (6 at the very least) and I still have to find any issue with them. Compared to PS2, and how over 8MB cards can be quite unstable, and how Sony forced for thirds to program "memory card checks" so games wouldn't save properly on third party cards (like God Hand), GC memory cards are so hassle free it's refreshing, lol.
About Eternal Darkness... I always say that what scare each of us can be very different and subjective. Some people find blood scary, others may find implications way more terryfing. The game by itself can be scary, and I still consider it one of the greatest of its generation. That said, I can't keep up with what "general public" cares or likes any more, so what I may think may not hold for current "gamers". It's not a "jumpscare-a-minute" type of game, thankfully. That said, the game does like to screw with you, that is correct!
And yeah, I also got scared easily back in the day. I remember Resident Evil Remake, and being too afraid of doing anything, wasting typewriter tapes left & right with each silly step I did, and finding out I was completely screwed. Then I discovered that zombies could break doors, completely shattering what I thought to be safety barriers. Fun times.