Upgrade
Carry Capacity Tier 4+
Updated:
Priority 9 upgrade — Maximizes stacking for extended aisles
Overview
Carry Capacity Tier 4+ is upgrade priority 9 in the recommended Clean the Supermarket purchase path. It belongs to the carry progression category and is what most veteran sorters consider a late-game power spike.
Per the canonical /build/upgrade-order/ reference, Carry Capacity Tier 4+ works best when paired with the upgrades from the same category and category-adjacent ones — for example, Carry Capacity Tier 1 unlocks the math behind Carry Capacity Tier 2, while Movement Speed pairs multiplicatively with any carry upgrade. Prerequisites: Carry Tier 3.
In effect terms, Carry Capacity Tier 4+ maximizes stacking for extended aisles The currency to purchase upgrades comes from shelving items, so progress is sequential — clear, earn, upgrade, return faster. Carry and Speed are the core front-loaded categories because they directly compound the time-to-shelve ratio; automation tools like Auto-Shelve and quality-of-life perks like Pickup Range only justify their cost once your base loop is already efficient. Carry Capacity Tier 4+ fits into this progression at priority slot 9, which is exactly where most run-optimized loadouts place it.
Carry Capacity Tier 4+ is the late-game carry cap. It supports 6-8+ items per trip, enabling single-trip clears even on extended stretching-shelf rows. The 'Tier 4+' notation in the canonical order reflects that the upgrade has multiple sub-tiers above the slot 9 anchor — each tier above 4 progressively raises the cap.
Per priority slot 9 in the canonical order, Tier 4+ sits after Auto-Shelve Tier 1. The placement reflects the synergy: Tier 4+ carry without Auto-Shelve creates click-fatigue from manual placement of large stacks, but Tier 4+ with Auto-Shelve eliminates fatigue entirely.
Tactical impact: with Tier 4+ active, the A5 (Drinks), A6 (Snacks), and A10 (Pantry) aisles become 'one-trip aisles' even at 40+ slot stretched lengths. This is the upgrade that makes 100% completion runs feasible under aggressive time pressure.
Video Demo
What This Upgrade Does
- Maximizes stacking for extended aisles
- Priority slot 9 in the recommended purchase path
- Category: carry
- Requires: Carry Tier 3
Value vs Opportunity Cost
Pros
- ✓ Compounds time-to-shelve ratio when paired with category-adjacent upgrades
- ✓ Documented as priority slot 9 in the canonical upgrade order
Cons
- ✗ Higher-tier upgrades cost more currency than Tier 1 entries
- ✗ No major opportunity costs beyond the in-run currency expenditure
At a Glance
At a Glance
- Priority
- Tier 9
- Category
- carry
- Tier
- 4
- Prerequisites
- Carry Tier 3
When to Buy This Upgrade
Buy Carry Capacity Tier 4+ once your base carry-speed-jump loop is established.
The decision rule is: never buy automation or utility before basic capacity and speed are at Tier 2+. Carry Capacity Tier 4+'s priority slot of 9 means it is a late-game investment that requires existing progression. If you skip Carry Capacity Tier 4+ entirely, the run still completes — but you'll spend roughly 20-40% more time per aisle once stretching shelves kick in. Most stretching-shelf strategies assume Carry Tier 3+ and Speed Tier 2+ are active by the time mid-store aisles (A4-A6) appear in your run.
Note prerequisites: Carry Tier 3. The dependency chain is real — newer Tier upgrades read your existing Tier as a gating check.
Buy this ninth, after Auto-Shelve Tier 1. The carry-carry-speed-speed-carry-jump-speed-auto-carry cadence is the canonical late-game loadout.
If you skip it: late-game runs hit a throughput ceiling at the Carry Tier 3 cap. The compound effect on completion time is roughly 10-15% additional wall-clock, mostly in the late-game stretching-shelves states.
Tactical note: Tier 4+ has the highest currency cost of any progression upgrade. Plan your currency accumulation across the mid-game so that Tier 4+ can be purchased immediately after Auto-Shelve Tier 1 unlocks.
Patch History
Carry Capacity Tier 4+ has been part of the Clean the Supermarket progression tree since the Tidyverse launch on 2026-06-16. Its placement at priority slot 9 in the canonical /build/upgrade-order/ reference has been stable across every documented patch through 2026-06-29. The effect (maximizes stacking for extended aisles) and prerequisites (Carry Tier 3) have not been re-tuned in any post-launch update. Any future Tidyverse patch that affects this upgrade's priority slot, effect, or prerequisite chain will be documented here with the patch date and old-vs-new state for transparency. As of 2026-06-29 the canonical purchase order tree remains unchanged.
Synergies With Other Upgrades
Frequently Asked Questions
- Carry Capacity Tier 4+ is priority slot 9 in the canonical Clean the Supermarket upgrade order. It's a late-game purchase that depends on the foundational carry+speed baseline being active first. See [/wiki/upgrades](/wiki/upgrades) for the full 12-upgrade priority order.
- Maximizes stacking for extended aisles. Tactical impact: with Tier 4+ active, the A5 (Drinks), A6 (Snacks), and A10 (Pantry) aisles become 'one-trip aisles' even at 40+ slot stretched lengths. This is the upgrade that makes 100% completion runs feasible under aggressive time pressure.
- Yes — Carry Capacity Tier 4+ requires Carry Tier 3 before it can be purchased. The dependency chain is enforced by the game's upgrade tree, so you can't skip ahead.
- If you skip it: late-game runs hit a throughput ceiling at the Carry Tier 3 cap. The compound effect on completion time is roughly 10-15% additional wall-clock, mostly in the late-game stretching-shelves states.
- Carry Tier 4+ pairs with Auto-Shelve Tier 1 + 2+ for the canonical 'late-game power loadout'. Multiplies with every speed tier. No anti-synergies documented.
- Late-game, once your carry+speed baseline is mature and you're optimizing for completion-percentage marginal gains.
- Yes for speed-run or 100% completion-focused runs. For shorter casual runs, the late-game upgrades may not fire enough times to justify the currency cost.
- Upgrades persist with your save data. Be cautious of the T-key on PC — pressing it can hard-wipe your save with no confirmation on some builds. See [/guides/how-to-play](/guides/how-to-play) for save-protection tips.