I personally haven't played the game, but I've seen a few gameplay videos of it, and I'd say that a good recommendation would have to be This War of Mine.
It touts itself to be a survival game in that the game revolves around trying to survive in a country currently being ravaged by war. It's 2D, and while I don't think that there are any puzzles, it certainly plays more like a strategy game in that you can't just run in guns blazing. By day, due to snipers on the lookout for anything making so much as a twitch in the wrong direction, i.e. anywhere, you spend the day building various contraptions to aid in survival, such as makeshift ovens and beds, whereas by night, you spend going to various areas to collect materials to survive, like nails, boards, paper, tobacco, and so on.
Each character you get in the game is supposed to have some characteristics, such as a smoker and a carpenter or something to that effect. The characters can die, obviously, and there are a lot of ways that this can happen. For instance, sickness or hunger, or even just depression and then suicide.
And then there's the other survivors. While some are outright hostile and will try to rob you at a moment's notice, there's also the fact that some are just other people that you can stumble upon and accidentally get into a fight with. You can even rob them to help your own group survive, thus the shaky morality that you are looking for.
Again, I don't really have any experience with the game itself, but I'd say that it seems like a pretty good choice, given your quota. More or less because, as I've said before, I haven't played the game myself.
It touts itself to be a survival game in that the game revolves around trying to survive in a country currently being ravaged by war. It's 2D, and while I don't think that there are any puzzles, it certainly plays more like a strategy game in that you can't just run in guns blazing. By day, due to snipers on the lookout for anything making so much as a twitch in the wrong direction, i.e. anywhere, you spend the day building various contraptions to aid in survival, such as makeshift ovens and beds, whereas by night, you spend going to various areas to collect materials to survive, like nails, boards, paper, tobacco, and so on.
Each character you get in the game is supposed to have some characteristics, such as a smoker and a carpenter or something to that effect. The characters can die, obviously, and there are a lot of ways that this can happen. For instance, sickness or hunger, or even just depression and then suicide.
And then there's the other survivors. While some are outright hostile and will try to rob you at a moment's notice, there's also the fact that some are just other people that you can stumble upon and accidentally get into a fight with. You can even rob them to help your own group survive, thus the shaky morality that you are looking for.
Again, I don't really have any experience with the game itself, but I'd say that it seems like a pretty good choice, given your quota. More or less because, as I've said before, I haven't played the game myself.