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I had never even heard of this game until now, but see it got good reviews. Castaway stories, I was familiar with but never played. This would be absolutely wonderful with the new engine and the gameplay elements that already exist, though I can't see aspirations being a big part of it. I can imagine the need to manage your Sim's morale to avoid getting too sad and finding ways to lift them up. Emotions would be excellent for a game like that, as opposed to a simple mood bar. It would make a good mod for 4, but not sure if they have the ability to convert the whole game like that.
I'm currently playing a game called don't starve, in which you are expected to die once in a while because of the difficulty of surviving in a very harsh world. You actually get XP from losing the game, which unlocks other characters. There is no end, but the survival aspect is fun and every game is different.
This is being relocated to Other Sims Games. We don't normally speculate about unconfirmed Sims titles here, but this might enlighten some other people to the existence of these games.