> "40 mind bending puzzles, can you get to the end?" - Author's description
[http://dr-d-king.itch.io/]
Play on itch.io [http://dr-d-king.itch.io/optisocubes] (Browser)
[Via Practice Theory Play
[https://practicetheoryplay.wordpress.com/2015/06/04/optisocubes/]]
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