Searchable reference
Stardew Valley Ginger Island Puzzle Database
Ginger Island puzzle records for Gem Birds, Banana Shrine, Leo's hut tree, Gourmand Frog crops, Green Whack-a-Mole, Colored Crystals, Mermaid Flute Blocks, Pirate Cove darts, Stingray fishing, Gourmand Statue, hidden walnuts, and Golden Walnut cleanup.
Gem Birds Puzzle
Island East / 5 Golden Walnuts
On rainy Ginger Island days, find Gem Birds in north, south, east, or west regions, collect the dropped gem, and place the correct gem on the matching compass pedestal at the hidden Island East shrine.
Banana Shrine and Leo's Hut
Island East / 4 Golden Walnuts and 3 Tent Kits
Use the first Island East loop to place a Banana at the altar for the gorilla reward, hit the tree inside Leo's hut with an axe, and grab the hidden jungle package with 3 Tent Kits.
Gourmand Frog Crop Puzzle
Island West / 15 Golden Walnuts
Grow Melon, Wheat, and Garlic on the Island Farm in that order. Each mature crop must remain unharvested when shown to the Gourmand Frog, and each crop awards 5 Golden Walnuts.
Green Whack-a-Mole
Island West / 1 Golden Walnut
Find the green Duggy moving between holes on Island West. Hit it with the Watering Can, or cover three holes with placed objects and strike it with a tool when it has fewer exits.
Colored Crystals Simon Says
Island West / 3 Golden Walnuts
Enter the cave northeast of Tiger Slime Grove and complete the five-round colored crystal memory game. Failed attempts restart the game but gradually slow it down.
Mermaid Flute Block Puzzle
Island Southeast / 5 Golden Walnuts
Place Flute Blocks by the five stone groups on rainy Island Southeast days, tune them to the stone values, and run past them from left to right to play the Mermaid's song.
Pirate Cove Darts
Pirate Cove / 3 Golden Walnuts
When pirates visit Pirate Cove, play Darts and score exactly 301. The first three wins award one Golden Walnut each; later wins have no walnut reward.
Pirate Cove Fishing and Dig Route
Pirate Cove and Island Southeast / Stingray access, Gourmand Statue, 2 Golden Walnuts, and pirate Mead utility
Use Island Southeast and Pirate Cove for the starfish tide-pool fishing walnut, the Pirate Cove barrel-area dig walnut, Stingray fishing, Gourmand Statue fishing, and pirate-night Mead if the outfit or Parrot Egg trinket qualifies.