Harbor Stack: Cargo Builder

Build the highest cargo stack in the harbor! Harbor Stack is a fast-paced arcade game where precision and rhythm matter. Release swinging containers from a dock crane and carefully place them on a ship. The better your alignment, the taller your structure grows. Gameplay Containers swing back and forth above the deck. Tap to release and land them on the pile. Accuracy affects your combo and final score: PERFECT — clean alignment, combo increases GOOD — stable placement, combo continues ROUGH — unstable drop, combo resets Chain accurate drops to boost your score and climb higher with every container. Each successful placement earns points based on: current combo difficulty level placement accuracy Difficulty modes Easy — slower movement, relaxed pacing Normal — balanced speed and challenge Hard — faster swings and shifting deck Round ends when The stack loses balance Cargo falls into the sea A container misses the platform Features One-tap gameplay Physics-driven stacking mechanics Combo scoring system Unlockable achievements Short onboarding tutorial Sound and vibration controls Local progress saving Drop cargo, keep the balance, and build your highest harbor stack. How tall can you go?