Robot Factory vs Stack Attack!!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Robot Factory
Merge and upgrade futuristic robots and transformers in a bustling factory. Build a powerful mecha army, collect coins, and dominate the battlefield with classic clicker and merge mechanics. Defend your empire and conquer foes in this sci-fi idle adventure.
- Mecha Fusion and Upgrades
- Robots Factory Management
- Collect Coins and Craft
- Strategic Battlefield Defense
- Idle Game Mechanics
- Sci-Fi Robot Warfare
Read full descriptionHide full description
Step into the futuristic Robot Factory and witness the magic of Mecha Fusion! Craft, merge, and upgrade your mechas and transformers in this merge clicker game set within a bustling robots factory. Build an empire of high-tech robots, and strengthen your arsenal as you embark on an epic merge adventure. Collect coins, master robots, and dominate the battlefield with classic clicker and merge mechanics. Key Features: Mecha Fusion Marvel: Explore the art of Mecha Fusion and merge same-level robots to unlock powerful mechs! Robots Factory Hub: Manage a cutting-edge factory, merging robots, transformers, and crafting tanks. High-Tech Robotics: Merge high-tech robots and tower above the competition in this robot merge clicker game. Tanks Factory Domination: Merge robots for an impenetrable defense and strategic dominance on the battlefield. Strengthen Your Arsenal: Collect coins, upgrade your mechas, and become the ultimate master of robotic warfare. Epic Merge Quest: Experience the epic merge journey with captivating clicker empire and merge games. Sci-Fi Idle Wonderland: Immerse yourself in the world of sci-fi idle games, mechs, and futuristic robots. Defend Your Empire: Strategically merge and place your mechas to protect your land from enemies. Clicker Triumph: Rise to the top with classic clicker and rate multipliers in an merge clicker empire. Collect and Craft: Click, merge, and collect coins to craft the most formidable mecha army. Grow Your Army: Merge, upgrade, and build a powerful army to conquer foes in this merge and clicker game. Transformative Gameplay: Merge transformers, tanks, and robots in a traditional clicker style. Idle Advancements: Enjoy idle games mechanics and earn offline earnings to enhance your empire. Protect Your Land: Merge and place your creations strategically to defend your territory in this idle clicker. Download Robot Factory: Merge Mecha now and experience the ultimate merge game! Craft, upgrade, and dominate the battlefield with your powerful mecha army in this immersive idle merge clicker geme.
Stack Attack!!
Engage in intense battles against waves of enemies, strategically demolishing their formations with powerful weapons. Upgrade your capabilities by selecting the best skills to protect the cube world from a malevolent hex invasion.
- Defeat enemy waves
- Demolish enemy stacks
- Upgrade skills
- Save the cube world
- Space invader gameplay
Read full descriptionHide full description
Defeat waves of enemies! Use your weapons to demolish the enemies' stacks! Choose the best skills to upgrade your power! Save the cube world from the evil hexes!
Screenshots
Verdict
The clearest difference is ads: Robot Factory at none against Stack Attack!!'s shown. Stack Attack!!'s advantage is update cadence (every 2 weeks vs every 15 months) and ratings volume (399 vs 7). On price, rating, in-app purchases and monetization model 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. Robot Factory sells 9 one-off in-app purchases and Stack Attack!! sells 19 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.4 for Robot Factory against 4.3 for Stack Attack!!. That said, the two scores are not equally well evidenced: Stack Attack!! has 399 ratings behind it against 7, so its average is the more settled of the two.
Robot Factory ships an update every 15 months, Stack Attack!! every 2 weeks. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.
| Parameter | Robot Factory | Stack Attack!! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | 4.3 (399 ratings) |
| Positive reviews | — | 23.2% of reviews |
| Number of ratings | 7 | 399 — better |
| Update frequency | Every 15 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 89 MB | 247 MB |
| Age rating | 4+ | 12+ |
| Developer | Bohdan Savchenko | Voodoo |
Customer experience
Robot Factory
Stack Attack!!
Bugs and requests
Robot Factory
Not enough reviews yet to summarise bugs or requests.
Stack Attack!!
Reported bugs
3 issues- Enemies' health scaling with player's attack power
- Levels freezing or getting stuck at checkpoints
- Weapon and upgrade levels getting downgraded randomly
Requested features
3 requests- Mute sound effects option
- Better communication from developers about updates
- More content and stages to progress through
In-app purchases
Robot Factory
- 60 Gems$0.99
- 150 Gems$1.99
- Special offer 2$1.99
Show 6 moreShow fewer
- Remove all ads$2.99
- 400 Gems$2.99
- Special Offer$4.99
- 1000 Gems$4.99
- 3000 Gems$6.99
- 10000 Gems$12.99
Stack Attack!!
- Gem Pack Small$0.99
- Gold Pack Small$0.99
- Starter Pack$2.99
Show 16 moreShow fewer
- No Ads$2.99
- Gem Pack Medium$4.99
- 2X Speed!$4.99
- Gold Pack Medium$4.99
- Skip'its Medium Pack$5.99
- Gem Pack Large$9.99
- Gold Pack Large$9.99
- Premium Pass$14.99
- Gem Pack XL$19.99
- Skip'its Large Pack$19.99
- Gold Pack XL$19.99
- Diamond Hero$29.99
- Gem Pack XXL$49.99
- Gold Pack XXL$49.99
- Gem Pack XXXL$99.99
- Gold Pack XXXL$99.99
Questions
Is Robot Factory free?
Is Stack Attack!! free?
Which has better reviews, Robot Factory or Stack Attack!!?
Do Robot Factory or Stack Attack!! have ads?
Which is updated more often, Robot Factory or Stack Attack!!?
Other comparisons















