Parcel Line
Players run a courier depot conveyor: sort colour-coded packages into matching lanes, watch the machine assemble them into finished parcels, and time the moment a full parcel drops onto the departing truck. A twist on the classic sort-and-merge loop, tuned for satisfying flow and steady expansion.
- Sort & Merge
- Hybrid-Casual
Engine
UnityGenre
Hybrid-Casual, Sort & Merge, IdleArt Style
Colorful, stylized low-polyMode
Single playerPlatform
Mobile (Portrait Orientation)See it in action
How it plays
Colour-Coded Sorting
Players drag mixed packages into matching colour lanes on the conveyor, cleaning up the flow before it jams the merging station.
Auto-Merge into Parcels
Once a lane has enough same-colour boxes, they auto-merge into a completed parcel, giving a satisfying visual payoff for every clean sort.
Truck Loading & Dispatch
Finished parcels slide down a chute directly into the departing truck; loading a full truck triggers the next dispatch and a coin reward.
Multi-Conveyor Depot
Multiple conveyors run at once, so players juggle two or three streams of packages instead of one, ramping difficulty gradually.
Conveyor & Truck Upgrades
Coins upgrade conveyor speed, lane count, sorter accuracy and truck capacity — each upgrade visibly changing the depot layout.
Special Package Variants
Rare oversized or fragile packages take multiple lanes or careful handling, breaking rhythm and rewarding attentive sorting.
Misroute Penalty
A wrong-lane package briefly stalls the conveyor and hurts flow, penalising sloppy play without ending the run outright.
Depot Progression Map
New depots (city, port, cargo hub) unlock as coins accumulate, each introducing new package types and truck sizes to keep the loop fresh.
Conveyor flow engineered to feel effortless
The Challenge
Hundreds of packages moving across multiple conveyors, real-time merging, drag input on any of them, plus a truck loading animation — all needing to feel smooth and responsive on mid-range phones without dropping input events.
The Approach
Packages travel on baked conveyor splines rather than physics, so hundreds move at fixed cost. Sorting uses a grid-hash lookup so drag hit-tests stay O(1) regardless of on-screen count. Merges are pooled prefab swaps, and the truck loader batches finished parcels into a single tween per dispatch.
The Result
Sorting feels instant even when the depot is packed, merges pop with zero stutter, and truck dispatches stay perfectly on beat — the exact rhythm the sort-and-merge loop lives on.
Shipped and store-ready
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