Puzzle Retreat is a real challenge in the later stages. If you've managed to conquer it for the time being, you might like some of these other games:

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Flow Free Answers
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Lazors Answers
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Monument Valley Videos
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4 Pics 1 Song Help
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This + That Answers
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4 Pics 1 Word Help
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Icomania Help
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GTA 5 Help
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What's The Band Help
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TwoDots tips
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Icon Pop Help
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Pic Combo Help
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Guess The 00s Answers