Each case begins with a strange little story and a missing explanation. You type yes-or-no questions to Jev, the keeper of the archive. Good questions unlock clues on a mind map, and when the pieces fit, you write down what really happened.
These are lateral thinking puzzles, also called situation puzzles: the man in the elevator, the lighthouse keeper, the card marked 90 and more. Free to play in your browser on desktop or phone, no download or sign-up.
Made by Tier 9 Games.