Harborline: Cargo Puzzle

In-app purchases
Content rating
Everyone
1+
Downloads
Content rating
Everyone
In-Game Purchases
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About this game

Every load has a dock.

Harborline is a logic puzzle about planning deliveries. Each harbor starts with a fixed set of cargo and up to four docks, A to D. Every dock asks for one exact load — a chest, a container, a cargo tower. Combine two matching loads that sit side by side and choose which of the two spots the bigger load lands on. Fill every dock exactly and clear the quay completely to win.

Nothing refills. Nothing falls. There is no timer. A load sent the wrong way can strand a dock, so every move is a decision you can think through — and Undo is always free.

204 HARBORS TO SOLVE
Thirteen chapters grow from small 4×4 harbors with two docks to busy 7×7 ports with four. Every level ships with a verified solution.

NINE KINDS OF CARGO
Parcels become crates, crates become barrels, and on up through chests, containers, pallets, cargo towers and fuel tanks to a whole freighter. Each one is drawn and colored so you can read the harbor at a glance.

MAKE A CLEAN DELIVERY
Solve a level without hints or undos to earn a Clean Delivery. Replay any cleared level to improve it, and see where you stand among the Harbormasters.

TRY 40 LEVELS FREE
The first three chapters are free and introduce all four docks. A one-time Pro purchase opens all 204 levels and premium harbor themes. Levels unlock in order as you play. StackForge Play Pass also includes Pro while subscribed. Prices and terms are shown by Google Play before purchase, and purchases can be restored from Me or the Pro screen.

NO ADS. NO ENERGY. NO PAID RETRIES.
Play offline without an account. An internet connection is needed only for the Harbormasters rankings and optional account features.

Terms: https://stackforgestudios.com/terms
Privacy: https://stackforgestudios.com/privacy
Cargo puzzle: merge matching loads and fill every dock. 204 harbors, no ads.
Updated on
Oct 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Financial info
  • This app may collect these data types
    Personal info, Financial info, and App activity
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Fixes and improvements.