Case in point: The Forest. I love that game a lot, but it's trivial now because I know all the safe choices. To make it a challenge, I have to make sub-optimal choices. (Having to do with where to sleep and how to build a base the enemies can't reach. And it's not even cheese, it's just the enemy can't swim.)
I think the real problem comes when the challenge is learning the mechanics, but the game is no longer challenging after you have. I think The Long Dark may fix this, but I can't stay alive long enough to learn the game. It's a brutal, pure survival game, where you can start freezing to death minutes after the game starts. It also involves a lot of boring "sitting by the fire waiting for dawn, hoping you don't starve first."
@CarlCravens Yeah, waiting around hoping you don't freeze isn't great, but can't you rest while near a fire?
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