• Day 4: Giant Squid
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• Day 5: Hydrothermal Venture
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• Day 8: Seven Segment Search
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• Day 9: Smoke Basin
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• Day 10: Syntax Scoring
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• Day 11: Dumbo Octopus
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• Day 12: Passage Pathing
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• Day 13: Transparent Origami
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• Day 14: Extended Polymerization
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• Day 15: Chiton
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• Day 16: Packet Decoder
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• Day 17: Trick Shot
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• Day 20: Trench Map
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• Day 23: Amphipod
  
• Day 25: Sea Cucumber