Next game with a sad end?

[Tanshaydar]

Without a proper motive, giving a sad end is just throwing all away.
And 'sad', is not always that protagonist dies. Ever played Prince of Persia 2008?

Evoking emotions needs hard work, carefully built up atmosphere, and a proper motive. There is a chance it can be plain trash, or a legend like Silent Hill 2.

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From this point, it's spoiler if you didn't play Penumbra series. Shame on you, if you didn't.
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Penumbra series doesn't have any happy ending. Red dies in Overture, Philip dies in Requiem. So, Frictional really needs to do it after just one single game?