Assembly Line 2 vs Critical
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Reactor management
- Incremental income generation
- Permanent upgrades
- Research and secrets
- Survival gameplay
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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
Verdict
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
Both are free to download. Critical sells 17 one-off in-app purchases. Assembly Line 2 asks for nothing beyond the download.
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.
Assembly Line 2 ships an update weekly, Critical fortnightly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.
| Parameter | Assembly Line 2 | Critical |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (1.5K ratings) — better | 4.4 (125 ratings) |
| Positive reviews | 79.5% of reviews — better | 18.2% of reviews |
| Number of ratings | 1.5K — better | 125 |
| Update frequency | Weekly — better | Fortnightly |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 138 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Joao Reis | WaffleStack Studio LLC |
Customer experience
Assembly Line 2
Critical
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
Assembly Line 2
No in-app purchases
Critical
- 100 Gems$2.99
- 100 Gems$4.99
- Remove Ads$7.99
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- 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?
Is Critical free?
Which has better reviews, Assembly Line 2 or Critical?
Do Assembly Line 2 or Critical have ads?
Which is updated more often, Assembly Line 2 or Critical?
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