Realistic urban courier warehouse vertical sorting casual game. Small, medium and large express parcels drop nonstop from overhead conveyor belts each stage. Slide horizontal compartment bulkheads up and down to divide three independent storage channels, sorting every package into its size-matching storage bay before the countdown expires to unlock the next level. Any mismatched parcel draining warehouse durability, and empty durability fails the round instantly. Advanced stages double parcel falling speed, mix random mixed-size cargo batches, shrink available storage volume per compartment, and add sliding input lag to the divider gates. Bright industrial modern delivery warehouse visuals with smooth vertical bulkhead swipe mechanics for logistics casual downtime.