Worm World vs Book
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Worm World
Manage your own worm farm, feeding your worms the right food and maintaining optimal moisture and acidity levels. Keep pests away to produce potent worm tea and a mountain of treats. Enjoy groovy music and fast-paced action with cute characters.
- Worm farm management
- Maintain moisture and acidity
- Pest control
- Produce worm tea and treats
- Groovy music and sound effects
- Cute characters
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Get down and dirty with nature’s cutest recyclers and take charge of your very own Worm Farm. You’ve got lots of little mouths to feed, but not everything’s good for them. Keep your worms healthy and they’ll reward you not just with love but also with super potent treat-growing worm tea! They’re sensitive little creatures though. So watch your moisture and acidity levels. Otherwise rats, ants and other nasties will invade and wreak havoc on your munching minions. Features: • Groovy music and sound effects • Fast and furious action • The world’s cutest cast of characters • Amass a mouth-watering mountain of treats This is one game you’ll want to recycle over and over.
Book
Navigate challenging mazes, collect letters, and spell words to win. Outsmart enemies with spells and uncover hidden bonuses. Compete in daily challenges to maintain streaks and earn high scores in this classic arcade-style word game.
- Navigate mazes
- Collect letters
- Spell words to win
- Avoid enemies (Blots)
- Cast Slow-Down spells
- Find hidden letters and bonuses
- Daily Challenges
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Help Book-Man navigate mysterious mazes to collect letters while avoiding the diabolical Blots! Spell the word to win each level while racking up points and grabbing helpful bonuses. Outsmart the Blots by casting Slow-Down spells and uncovering hidden letters! Keep your streak going and earn extra points with Daily Challenges. Get the word game that’s packed with classic arcade action! Get Book-Man! From the creators of TheFreeDictionary.com, the massively popular online dictionary.
Screenshots
Verdict
The clearest difference is rating: Worm World at 5.0 against Book's 4.4. Worm World also leads on in-app purchases (none vs 7) and ads (none vs shown). Book's advantage is update cadence (every 2 months vs every 31 months) and ratings volume (272 vs 1). On price 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. Book sells 7 one-off in-app purchases. Worm World asks for nothing beyond the download.
Worm World holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Book has 272 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 56% of Worm World's written reviews are positive against 70% of Book's, so the app with the better star average is not the one people write more warmly about.
Worm World ships an update every 31 months, Book every 2 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.
| Parameter | Worm World | Book |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (272 ratings) |
| Positive reviews | 55.6% of reviews | 69.8% of reviews — better |
| Number of ratings | 1 | 272 — better |
| Update frequency | Every 31 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 34 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Brisbane City Council | Farlex, Inc. |
Customer experience
Worm World
Book
Bugs and requests
Worm World
Not enough reviews yet to summarise bugs or requests.
Book
Reported bugs
8 issues- Book-Man doesn't follow directional movements
- Book-Man goes through walls
- Game crashes to home page
- Book-Man freezes during play
- Cannot unlock next level with a key
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- Login fails
- Protagonist gets stuck at end of row/column
- Android bugs
Requested features
8 requests- More levels or zones
- More languages
- Different game styles
- More 'Book-Man' heroes
- Ability to earn keys without purchase
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- Hyperdrive or speed-up option for 'Book-Man'
- New themes
- More directions/tutorials
In-app purchases
Worm World
No in-app purchases
Book
- 15 coins$0.99
- 40 coins$1.99
- 65 coins$2.99
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- 100 coins$3.99
- 200 coins$6.99
- 300 coins$9.99
- 1000 coins$29.99
