based on ratings from 5 users
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This was the first unlock game I played and it did not disappoint while none of the puzzles where that special everything worked well together.
The Formula is O.K.; it suffers from the usual science-lab problem where the trappings of science are combined in somewhat arbitrary ways. This particular one feels like a simulation of an escape room, including "escape room logic".
In general, Unlock! is less puzzly than games like EXIT, but more about intuiting how to combine objects in a logical way. The penalty system can be a bit off putting. Nothing is destroyed; the game may be given away and used by another team.