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The way those five metal pieces click and resist as you twist them feels genuinely mechanical, like you're working a real lock mechanism. Took me a solid evening of frustrated pushing and pulling before the sequence finally gave way—very satisfying payoff.

I’d heard these were tricky, so I braced myself for rage, but the twisting and pulling actually feels surprisingly satisfying as each piece clicks loose. My only complaint is that I solved it in one sitting, but then again, that’s what kept me hooked for a solid hour.

The twisting and pulling sequence is way trickier than it looks—I failed for a solid twenty minutes before that satisfying click when the five pieces finally separated. Perfect little desk fidget that actually makes you think.