Unbox a Factory on Roblox is one of those idle tycoon games that looks simple on the surface but has a surprising amount of depth once you start chasing optimal setups. Developed by Habit Games, the game sits at roughly 1,100 concurrent players with a 97% approval rating — solid numbers that reflect how well the core loop holds up.
This tier list ranks every factory in Unbox a Factory based on raw earnings output, scaling potential through the evolution system, crate rarity, and how each factory fits into an optimized layout. Whether you're grinding your first few rebirths or min-maxing an endgame setup, knowing which factories deserve your workers and which ones are just filler will save you hours of wasted effort.
Table of Contents
S Tier — Best Factories in Unbox a Factory
S-tier factories are the ones you build your entire layout around. These generate the highest visitor earnings, scale the hardest through evolution, and justify every Diamond crate you open to get them. If you're placing workers anywhere, it should be on these first.
Evolved High-Tech Factories (Evolved Gold / Titanium / Rare Metal)
Evolved High-Tech Factories are the undisputed kings of Unbox a Factory. When you merge two identical high-tier factories through the evolution system, the resulting Evolved version gets a massive multiplier to visitor earnings that dwarfs anything else in the game. We're talking 3-5x the output of their base versions, which were already the strongest factories available.
Getting here requires patience and duplicate luck. You need two copies of the same Gold, Titanium, or Rare Metal factory from Diamond crates, which isn't cheap. But once you land that evolution, it's game over for your earnings ceiling. Place an Evolved High-Tech factory near your entrance with a full stack of workers, and it will out-earn every other factory on your lot combined. If you need extra Robux to fund Diamond crate runs, check our Unbox a Factory free Robux guide.
Evolved Electronics Factory
The Evolved Electronics Factory is the second-best evolution outcome you can get. Electronics factories are already top-tier producers at base level, and when you merge two of them, the evolved version puts out numbers that compete directly with Evolved High-Tech factories in sustained earnings. The gap between them is smaller than most players assume.
What makes the Evolved Electronics Factory particularly valuable is that Electronics factories drop more frequently than Gold or Titanium from Diamond crates. Your odds of getting a duplicate — and therefore triggering evolution — are meaningfully higher. For players who don't want to burn through hundreds of Diamond crates chasing rare duplicates, this is often the most realistic path to an S-tier factory.
Evolved Steel Factory
Evolved Steel Factory rounds out the S-tier evolution lineup. Steel factories provide strong sustained earnings at base level, and their evolved form amplifies that consistency into something genuinely impressive. The evolution bonus turns a reliable mid-tier producer into a factory that holds its own alongside the best in the game.
Steel factories sit in that sweet spot where they're common enough to get duplicates but rare enough that the base stats are worth evolving. If you've been pulling from Gold and Diamond crates and sitting on two Steel factories wondering whether the merge is worth it — it is. Every time. The evolved multiplier transforms the unit completely.
A Tier — Excellent Factories
A-tier factories are your core earners before you hit evolution milestones. These are the factories that drive late-game revenue, fund your crate-opening sessions, and keep your visitor earnings climbing through each rebirth cycle. They're excellent on their own and become S-tier candidates the moment you pull a duplicate.
Gold Factory is the primary late-game revenue driver. It drops from Diamond crates and generates more visitor income per tick than any non-evolved factory in the game. If you're running a layout without at least one Gold Factory, you're leaving significant earnings on the table. Position it near the entrance and stack workers on it immediately.
Titanium Factory is a high-value rare metal producer that sits just behind Gold Factory in raw output. The difference between them is narrow enough that placement and worker allocation matter more than the factory type itself. Titanium drops are less common than Gold from Diamond crates, which makes duplicates harder to come by for evolution.
Electronics Factory at base level is a strong late-game producer with excellent per-visitor earnings. It's the backbone of most competitive layouts before players start hitting evolution milestones. The consistency of its output makes it a safe investment for workers and upgrades.
Steel Factory in its base form provides strong sustained earnings that scale well through the mid-to-late game. It's the workhorse of A-tier — not flashy, but reliable. Steel factories show up frequently enough from Gold crates that most active players will accumulate duplicates naturally over a few weeks of play.
B Tier — Good Factories
B-tier factories are the bridge between your starting lineup and the endgame setup you're working toward. They generate enough income to fund crate-opening runs and keep your progression moving, but they won't carry you through the final stages of optimization.
Iron Factory is the essential bridge to endgame content. It's the first factory most players get that produces enough to meaningfully accelerate crate purchases. Don't sleep on Iron — it funds the Diamond crate runs that eventually give you A-tier and S-tier factories. Assign 2-3 workers here until you have something better to replace it.
Copper Factory represents the first meaningful earnings ramp for most players. When you unbox a Copper Factory from a Silver crate, you'll notice an immediate jump in visitor income compared to anything you had before. It's the turning point where the game shifts from slow early-game grind to actual momentum. Advanced factories from Silver and Gold crates also fall into B-tier, providing incremental upgrades that keep progression smooth.
The key with B-tier factories is knowing when to move on. Once you have 2-3 A-tier factories placed and working, start pulling workers off your B-tier units and reassigning them. Don't waste totem slots on B-tier factories when those global buffs could be amplifying your Gold or Titanium output instead. For the latest codes that can help you skip past the B-tier grind faster, check our Unbox a Factory codes page.
C Tier — Average Factories
C-tier factories are where everyone starts, and where nobody should stay. These generate the minimum viable income to get you through the earliest stages of the game, but their output falls off hard once you start opening Silver crates and pulling anything better.
Wood Factory offers slightly better returns than the absolute starter unit, but the difference is marginal. Stone Factory is a marginal upgrade over Basic, offering a small bump in per-visitor earnings that won't meaningfully change your trajectory. And the Basic Factory is exactly what it sounds like — the starter unit with minimal output that exists solely to get you through your first few minutes of play.
The biggest mistake new players make is investing workers or upgrades into C-tier factories. Don't do it. Those resources compound significantly when applied to higher-tier factories. Run your C-tier units at base level, collect enough to open Bronze and Silver crates, and replace them the moment you pull anything from B-tier or above. Your future self will thank you for the restraint.
Tier List Summary Table
Here's every factory ranked at a glance. Use this as a quick reference when deciding where to assign workers and which factories deserve the best spots in your layout.
| Factory | Tier | Rarity Source | Key Strength |
|---|---|---|---|
| Evolved High-Tech (Gold/Titanium/Rare Metal) | S | Diamond Crate + Evolution | Highest visitor earnings multiplier in the game |
| Evolved Electronics Factory | S | Diamond Crate + Evolution | Top-tier output, easier to evolve than High-Tech |
| Evolved Steel Factory | S | Gold/Diamond Crate + Evolution | Strong sustained earnings with evolution bonus |
| Gold Factory | A | Diamond Crate | Primary late-game revenue driver |
| Titanium Factory | A | Diamond Crate | High-value rare metal producer |
| Electronics Factory | A | Diamond Crate | Consistent high-value late-game output |
| Steel Factory | A | Gold / Diamond Crate | Reliable sustained earnings, common enough for evolution |
| Iron Factory | B | Silver / Gold Crate | Essential bridge to endgame, funds crate runs |
| Copper Factory | B | Silver Crate | First meaningful earnings ramp |
| Wood Factory | C | Bronze Crate | Slightly better than Basic |
| Stone Factory | C | Bronze Crate | Marginal upgrade over Basic |
| Basic Factory | C | Starter | Minimal output, replace immediately |
How We Ranked These Factories
Our rankings are based on four core factors: raw earnings output (how much visitor income the factory generates per tick at max workers), evolution potential (how strong the factory becomes after merging duplicates), accessibility (which crate tier it drops from and how realistic it is to obtain duplicates), and layout efficiency (how much the factory contributes when positioned optimally near the entrance).
We tested each factory across multiple rebirth cycles to account for the permanent bonuses that compound over time. A factory that performs well in your first run might fall off after 3-4 rebirths when the multipliers shift the math. Our rankings reflect performance at mid-to-late game investment levels, which is where most active players spend the majority of their time.
The evolution system is the single biggest factor separating S-tier from A-tier. A base Gold Factory is excellent. An Evolved Gold Factory is on a completely different level. We weighted evolution potential heavily because that's where the endgame ceiling lives. If you want to compare how Unbox a Factory's progression system stacks up against similar games, our Unbox a Factory vs Grow a Garden comparison breaks down the key differences.
We also factored in worker and totem efficiency. Workers increase specific factory output, so assigning them to S-tier factories yields exponentially better returns than spreading them across C-tier units. Totems push global consistency across all factories, making them most valuable once your entire layout is A-tier or above. The ranking reflects which factories justify that resource investment.
Earn Free Robux While You Play
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Frequently Asked Questions
Evolved High-Tech Factories (Evolved Gold, Evolved Titanium, Evolved Rare Metal) are the undisputed best factories in Unbox a Factory as of May 2026. They provide massive multipliers to visitor earnings that no other factory type can match. Getting there requires merging duplicate high-tier factories through the evolution system.
The evolution system lets you merge two identical factories into an Evolved version with significantly higher output multipliers. You need two copies of the same factory — for example, two Gold Factories merge into one Evolved Gold Factory. Evolved factories always outperform their base versions by a wide margin, making duplicates valuable rather than disappointing.
Unbox a Factory has four crate tiers: Bronze, Silver, Gold, and Diamond. Bronze crates give basic factories like Wood and Stone. Silver and Gold crates contain mid-tier factories like Iron and Copper. Diamond crates have the best odds for top-tier factories like Gold Factory and Titanium Factory. Higher-tier crates cost more but give better rarity odds.
Workers first, always. Workers increase the output of a specific factory immediately, giving you a direct earnings boost right away. Totems provide global consistency across all factories, which is more valuable once you have a strong roster. Early on, focusing workers on your best 2-3 factories will outperform spreading totems across weaker ones.
Short, efficient rebirth cycles beat one long grind. Rebirth as soon as you hit the next rebirth milestone rather than grinding for hours past it. Each rebirth gives permanent bonuses that compound over time, so doing three quick rebirths is almost always better than one long session. The permanent multipliers stack and accelerate every future run.
Yes, positioning matters significantly. Place your highest-earning factories near the entrance where visitors see them first. Visitors interact with factories in order of proximity, so front-loading your best producers ensures they generate maximum revenue before visitors move on. Burying an S-tier factory in the back of your lot is leaving money on the table.