Comparison

Assembly Line 2 vs Critical

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Assembly Line 2

Build and manage a factory to craft and sell resources. Optimize your assembly line with various machines and upgrades to maximize profits, even while offline. Discover new resources and make strategic decisions to grow your industrial empire.

Highlights
  • Build and optimize 21 different machines
  • Unlock tons of upgrades
  • Craft around 50 unique resources
  • Offline progress generation
  • Informative machine and resource data
  • Progress backup
Features
Read full description

Welcome to Assembly Line 2, the sequel to the factory-building and managing game. Assembly Line 2 combines elements from idle and tycoon games. Make the most money by using different types of machines to build an assembly line to craft resources and sell them. Unlock upgrades to make it more efficient and expand your factory. The goal is simple, build resources and sell them. Starting with a few machines and very basic resources, and using them with more advanced machines to craft and create more complex resources. Your factory will continue generating money even when you are offline. When you return to the game you will have piles of money waiting for you, but don't spend it all in one place! While Assembly Line 2 is an idle game, because you make the layout of your factory, it is up to you to optimize it to make the most money possible. Don't worry if you get lost with all those machines to build, the game offers an information menu so you can see what each machine does at any time. It also offers information on each resource price, so you can make decisions on what to craft. You can also see stats on the amount you are producing. Features: - 21 different machines to build and optimize the best factory. - Tons of upgrades to increase productivity. - Around 50 different unique resources to craft. - Multi-language support. - Backup your progress. - No internet required.

About

Critical

Manage a reactor to prevent it from becoming critical by delivering water. Earn money over time to unlock permanent upgrades and improve your survival capabilities. Invest wisely to extend your runs and uncover secrets.

Highlights
  • Reactor management
  • Incremental income generation
  • Permanent upgrades
  • Research and secrets
  • Survival gameplay
Features
Read full description

Stop the reactor from going critical by delivering water. Robots are expensive though, so we use cheap expendable personnel instead. Money earned ramps up incrementally the longer you last. Survive as long as possible to maximize your income! Spend your hard earned cash to unlock permanent upgrades. Invest wisely to make each new run longer than the last. Tons of upgrades to buy, research to be done, and secrets to uncover. Give it a try! The longer you can keep the reactor from exploding, the more money you’ll make. Start small and watch your income grow exponentially as you survive longer and longer. Delay the inevitable cataclysm as long as possible and watch your cashflow go through the roof.

Screenshots

Assembly Line 24 screens
Critical4 screens

Verdict

The call

The clearest difference is review sentiment: Assembly Line 2 at 80% against Critical's 18%. Assembly Line 2 also leads on in-app purchases (none vs 17) and rating (4.8 vs 4.4). Critical's advantage is iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Critical sells 17 one-off in-app purchases. Assembly Line 2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Assembly Line 2 holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Assembly Line 2 has 1.5K ratings behind it against 125, so its average is the more settled of the two. Written reviews point the same way: 80% of Assembly Line 2's written reviews are positive against 18% of Critical's.

UpkeepUpdate frequency

Assembly Line 2 ships an update weekly, Critical fortnightly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard7 real differences · 3 level
Assembly Line 2 versus Critical: the parameters behind the verdict, then further details
ParameterAssembly Line 2Critical
PriceFreeFree
Rating4.8 (1.5K ratings) — better4.4 (125 ratings)
Positive reviews79.5% of reviews — better18.2% of reviews
Number of ratings1.5K — better125
Update frequencyWeekly — betterFortnightly
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size138 MB99 MB
Age rating4+4+
DeveloperJoao ReisWaffleStack Studio LLC

Customer experience

Assembly Line 2

All ratings1,479 ratings
Positive94.9%
Neutral3.3%
Negative1.8%
Written reviews220 reviews
Positive79.5%
Neutral12.3%
Negative8.2%

Critical

All ratings125 ratings
Positive84.0%
Neutral4.8%
Negative11.2%
Written reviews11 reviews
Positive18.2%
Neutral18.2%
Negative63.6%

Bugs and requests

Assembly Line 2

Reported bugs

3 issues
  • Inconsistent offline earnings
  • Crafters and splitters stop working
  • Crashes on launch

Requested features

4 requests
  • Copy/paste assembly lines
  • Rotate/flip multiple machines
  • Pause production
  • Better performance optimization

Critical

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Assembly Line 2

No in-app purchases

17 purchases

Critical

One-time17
  • 100 Gems$2.99
  • 100 Gems$4.99
  • Remove Ads$7.99
Show 14 more
  • 225 Gems$7.99
  • Starter Pack$9.99
  • Remove All Ads$9.99
  • 225 Gems$9.99
  • 500 Gems$9.99
  • Pro Pack$9.99
  • Pro Pack$14.99
  • New Player Sale$14.99
  • 500 Gems$14.99
  • 1400 Gems$19.99
  • 800 Gems$19.99
  • 1400 Gems$29.99
  • 3000 Gems$29.99
  • 3000 Gems$39.99

Questions

Is Assembly Line 2 free?
Assembly Line 2 is free to download, with no in-app purchases.
Is Critical free?
Critical is free to download, with in-app purchases available.
Which has better reviews, Assembly Line 2 or Critical?
Assembly Line 2 is rated higher. Assembly Line 2 averages 4.8 out of 5 from 1.5K ratings, while Critical averages 4.4 from 125 ratings.
Do Assembly Line 2 or Critical have ads?
Both Assembly Line 2 and Critical show ads.
Which is updated more often, Assembly Line 2 or Critical?
Assembly Line 2 ships an update weekly, and Critical fortnightly. Most recently, Assembly Line 2 was updated on September 23, 2026 and Critical on September 22, 2026.

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