Stack Attack!! vs Bullet Fusion
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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
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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!
Bullet Fusion
Collect and merge bullets to enhance your firepower and engage in intense combat. Maneuver strategically to maximize your attack capabilities and defeat numerous enemies with a gatling-style weapon.
- Collect and merge bullets
- Increase firepower
- Strategic maneuvering
- Gatling-style weapon combat
- Fight multiple enemies
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Become a master planner, collect and merge bullets to increase your firepower ! Maneuver to increase your firepower even more. Fight many enemies by using your fantastic gatling-style weapon.
Screenshots
Verdict
The clearest difference is rating: Stack Attack!! at 4.3 against Bullet Fusion's 1.6. Stack Attack!! also leads on ratings volume (403 vs 5). Bullet Fusion's advantage is update cadence (every 4 days vs every 2 weeks). On price, review sentiment, ads and in-app purchases 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. Stack Attack!! sells 19 one-off in-app purchases and Bullet Fusion sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Stack Attack!! holds the better App Store score, 4.3 against 1.6. That said, the two scores are not equally well evidenced: Stack Attack!! has 403 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 23% of Stack Attack!!'s written reviews are positive against 29% of Bullet Fusion's, so the app with the better star average is not the one people write more warmly about.
Stack Attack!! ships an update every 2 weeks, Bullet Fusion every 4 days. The most recent releases landed on August 19, 2026 and July 7, 2026 respectively.
| Parameter | Stack Attack!! | Bullet Fusion |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (403 ratings) — better | 1.6 (5 ratings) |
| Positive reviews | 23.2% of reviews | 28.6% of reviews — better |
| Number of ratings | 403 — better | 5 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | Yes | 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 | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 247 MB | 278 MB |
| Age rating | 12+ | 9+ |
| Developer | Voodoo | Yso Corp |
Customer experience
Stack Attack!!
Bullet Fusion
Bugs and 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
Bullet Fusion
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Stack Attack!!
- Gem Pack Small$0.99
- Gold Pack Small$0.99
- Starter Pack$2.99
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- 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
Bullet Fusion
- Remove Ads$2.99
Questions
Is Stack Attack!! free?
Is Bullet Fusion free?
Which has better reviews, Stack Attack!! or Bullet Fusion?
Do Stack Attack!! or Bullet Fusion have ads?
Which is updated more often, Stack Attack!! or Bullet Fusion?
Other comparisons
