+1 Shrink per Step Shrink Cubes Tier List

How We Rank Shrink Cubes

Unlike cosmetic upgrades, Shrink Cubes directly multiply your core stat. A cube that costs ten times more should ideally give you close to ten times the shrink per step — but price spikes, Rebirth multipliers, and zone requirements mean some cubes punch far above their cost while others are stepping stones you skip as fast as possible.

We assign S tier to cubes that define a progression phase: buy them immediately when affordable and they carry you for many Rebirths. A tier cubes are strong mid-game purchases worth saving for even if they delay one Rebirth cycle. B tier cubes are fine transitions — buy if you are stuck, but do not hoard Wins past the next tier. C tier cubes are early-game only; upgrade past them within your first few sessions.

Remember that Wins come from pushing into new areas on the world map. A cheaper cube that lets you reach the next zone today beats an expensive cube you farm toward for an hour while standing still.

S Tier — Best Shrink Cubes

These cubes offer the highest return on Wins and stay relevant deep into mid-game and beyond. Prioritize them whenever you can afford the price tag.

• Matrix Cube — Endgame staple with massive shrink per step. If you can see this price on the shop board, you are far enough along that nothing else compares. Pair with high Rebirth count before chasing it.
• Ultra-tier multiplier cubes — The top rows on the cube board scale shrink into the millions per step. Any cube in this bracket that you unlock after 8+ Rebirths belongs here; they unlock Cheese World doors and late treadmill zones faster than grinding Wins alone.
• Pre-Rebirth capstone cubes — The most expensive cube you can buy right before a planned Rebirth when your Rebirth multiplier will make the next run trivial. These are S tier for timing, not just raw stats.

A Tier — Strong Mid-Game Cubes

A tier cubes bridge the gap between starter purchases and endgame Matrix-tier gear. They are always worth buying unless you are within one zone push of affording the next S tier option.

• Mid-board multiplier cubes (roughly 10K–1M Wins range) — These multiply shrink enough to reach new map doors every few minutes. Most players live in this band from Rebirth 3 through Rebirth 8.
• First cube after each Rebirth — Immediately rebuying your previous best cube tier after Rebirth is A tier value because it restores your shrink rate before you tackle zones again.
• Cube bought with active Wins potions — Using free potions from active codes to afford one tier higher than normal pushes an A tier cube into S tier territory for that run.

B Tier and C Tier — Early Stepping Stones

B tier cubes get you moving when progress stalls, but replace them quickly. C tier cubes are the tutorial purchases — necessary once, then forgotten.

Starter cubes costing only a handful of Wins are C tier. They teach the shop loop but add negligible shrink compared to even the second or third cube on the board. Buy the cheapest available cube if you have zero multipliers, then save every Win toward the next two tiers without stopping.

B tier covers cubes you outgrow within a single play session — typically the third through sixth purchases on a fresh Rebirth run. Use them if a zone door blocks you and you cannot reach the next area otherwise. Never farm an extra ten minutes for a B tier cube when an A tier cube is visible on the next row.

For treadmill-focused players, cube priority still beats table upgrades early on. Cubes multiply every step everywhere; tables only help while you stand on them. Once your cube tier is stable, shift attention to tables and trail speed for faster zone clears.