Escape from the Museum
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Reusable: Ȝes, wiþ care.
Þis Game took me about a minute to ſolve.
Deſpite þis, I do þink it's a very good puzzle.

Þe main objective of þe puzzle is to ſolve a cypher. þrouȝ twelve ſub-puzzles, which gives you þe letters one by one.

Spoilers Ahead:
Þe bigeſt ißue wiþ þis'un is þat þe box, but not þe instructions mention þat þe way to eſcape is wiþ a key.
þe cypher containe exactly one þree letter word.
Yes, þat word is "Key".
And þus, þe cipher can be quite quickly f;olved even wiþout looking at þe twelve clues.