NEW · CARGO SORTING STRATEGY
Stack Harbor
Free the space. Uncover the cargo.
Fill each shelf with four of one letter. Move the matching top group onto an empty shelf or the same letter.
Drag between shelves, or select then tap. Keys 1–4 choose shelves · U undoes.
Rules & strategy
Move the entire matching top group that fits, onto an empty shelf or the same top letter. Each shelf holds four. A move never takes a tile from underneath another tile.
Finish with every occupied shelf full of one letter. Different final shelf orders are accepted. Empty space is your working room: uncover buried cargo without sealing off the only useful landing. A legal move can still lead to a dead end; Undo is unlimited.
60 original puzzles, with independently checked shortest routes. Open water uses three kinds of cargo, Tight berths four, Deep cargo five. Every board has only one empty shelf at the start. Route length is a design measure, not player-tested difficulty. Daily rotates this collection at 00:00 UTC; refresh for a new day. Progress lasts for this visit. No timer or lives.
Rules & example: Stack Harbor
- Move the matching top group onto an empty shelf or the same top letter. Each shelf holds four; as many matching tiles as fit move together.
- Finish with every occupied shelf full of one letter. Only top tiles can move. Empty shelves can be anywhere.
- Drag between shelves, select then tap, or press shelf numbers 1–6. U undoes. Hints use your current position.
A quick example
Shelf 1 has A A at the top. Shelf 2 has B B underneath one A and one free space. Moving 1 to 2 transfers only one A, filling the space; the other A stays on shelf 1.
Where to start
One empty shelf is your working space. Plan which buried group must come out next. 60 original boards in three packs; upper boards need at least 17 moves. Difficulty is structurally measured, not human-playtested. Daily rotates the bank. Progress lasts for this visit.
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36 games