Cross Virus vs Build Up!!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Cross Virus
A puzzle game where players strategically place blocks to contain and minimize the growth of viruses. The objective is to limit the spread of viruses by blocking their paths, preventing them from growing uncontrollably.
- Strategic block placement
- Virus growth containment
- Minimize virus count
- Cross-directional virus growth
- Touch-based controls
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This game is the 19th iOS game for the Web game site "DAN-BALL". Game to be enclosed by a block, virus to grow in a cross direction. You can place blocks in the locations that you have touched. Viruses can’t grow where there are blocks. After you have placed three blocks, the viruses will grow. It is the end of the game when a virus can not be growth. Place the block so that the number of virus is minimized.
Build Up!!
Construct your tower as tall as possible by strategically placing building nodes. Collect more nodes as you ascend to reach crucial checkpoints and achieve new heights.
- Build structures high
- Gather building nodes
- Reach checkpoints
- Ascend to new heights
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Build your structure as high as you can! Gather additional building nodes along the way and reach the checkpoints!
Screenshots
Verdict
The clearest difference is review sentiment: Cross Virus at 100% against Build Up!!'s 34%. Cross Virus also leads on in-app purchases (none vs 1). Build Up!!'s advantage is update cadence (fortnightly vs every 26 months) and ratings volume (16K vs 8). On price, ads, device support and iOS requirement 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. Build Up!! sells 1 one-off in-app purchase. Cross Virus asks for nothing beyond the download.
Build Up!! holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Build Up!! has 16K ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 100% of Cross Virus's written reviews are positive against 34% of Build Up!!'s, so the app with the better star average is not the one people write more warmly about.
Cross Virus ships an update every 26 months, Build Up!! fortnightly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | Cross Virus | Build Up!! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (8 ratings) | 4.5 (16K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 34.1% of reviews |
| Number of ratings | 8 | 16K — better |
| Update frequency | Every 26 months | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 266 MB |
| Age rating | 4+ | 12+ |
| Developer | DAN-BALL | Voodoo |
Customer experience
Cross Virus
Build Up!!
Bugs and requests
Cross Virus
Not enough reviews yet to summarise bugs or requests.
Build Up!!
Reported bugs
3 issues- Rivet counter malfunction
- Levels regenerating incorrectly
- Tower physics issues
Requested features
3 requests- More level variety
- Ability to create custom maps
- Removal of perfect triangle requirement
In-app purchases
Cross Virus
No in-app purchases
Build Up!!
- Remove Ads.$2.99
Questions
Is Cross Virus free?
Is Build Up!! free?
Which has better reviews, Cross Virus or Build Up!!?
Do Cross Virus or Build Up!! have ads?
Which is updated more often, Cross Virus or Build Up!!?
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