 If you liked
Tomodachi Game
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 ...then you might like
Omniscient Reader's Viewpoint
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In order to survive you need to complete games, that is the premise in both mangas. The scenario is different between the two manga, while in one the protagonist seems to be trasportated to a light novel world the others occurs in reality, however in both cases the protagonist needs to use their brains and abilities in order to survive the challenges together with their friends