Flyboys vs PRINCIPLES PROLOGUE
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Flyboys
Embark on a journey to master flight by building and improving a flying bicycle. Overcome challenges, learn from trials, and compete with others in aerial races to achieve success.
- Build a flying bicycle
- Improve flying bike potential
- Discover hidden challenges
- Race with friends
- Compete in aerial challenges
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Discover the magic of flying and become a "Flyboy," facing a tough journey full of trials and errors. Only those who endure and learn to fly will reach all successes and obtain... Your Own Path to Flying: Become a young dreamer who builds his flying bicycle. This classic tale inspires all of us who have gazed at the sky full of planes since childhood and dreamed of one day becoming pilots ourselves. Build, Improve, Soar: In your small workshop, you will use the successes achieved from flying to gradually enhance your flying bike's potential. The workshop is not just about building the bike but also about discovering hidden challenges that connect you with the game creators. Competitive Spirit: Race with friends and measure yourself against others in aerial challenges.
PRINCIPLES PROLOGUE
Explore a mysterious underground world filled with ancient ruins and advanced technology. High-definition graphics and spatial audio immerse you in an abyssal environment as you uncover the secrets of a hidden cave.
- High-definition graphics
- Spatial audio
- Abyssal underground world
- Mysterious ancient ruins
- Explorer narrative
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COLOPL has established a new brand "COLOPL Creators" for the purpose of sharing advanced technology!! Experience the latest technology through this app! - Overview - During the expedition, the explorer fell through a crack in the rock into a cave. There were traces of human presence and mysterious ancient ruins. And then she steps into the darkness... High-definition graphics and spatial audio create an abyssal underground world. * This app does not have save data function. * There is no monetization in this app.
Screenshots
Verdict
The clearest difference is in-app purchases: PRINCIPLES PROLOGUE at none against Flyboys's 1. PRINCIPLES PROLOGUE also leads on review sentiment (76% vs 45%). Flyboys's advantage is update cadence (weekly vs every 5 months). On price, rating, ratings volume and ads 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. Flyboys sells 1 one-off in-app purchase. PRINCIPLES PROLOGUE asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for Flyboys against 4.3 for PRINCIPLES PROLOGUE. Both are backed by a comparable volume of ratings — 95 and 58 respectively. Written reviews are what separate them: 45% of Flyboys's written reviews are positive against 76% of PRINCIPLES PROLOGUE's.
Flyboys ships an update weekly, PRINCIPLES PROLOGUE every 5 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Flyboys | PRINCIPLES PROLOGUE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (95 ratings) | 4.3 (58 ratings) — better |
| Positive reviews | 45.0% of reviews | 75.9% of reviews — better |
| Number of ratings | 95 — better | 58 |
| Update frequency | Weekly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 265 MB | 285 MB |
| Age rating | 4+ | 4+ |
| Developer | Flyboys Games s.r.o. | COLOPL, Inc. |
Customer experience
Flyboys
PRINCIPLES PROLOGUE
User reviews
Flyboys
From 95 App Store ratingsWhat we love
- 🎨 Beautiful artwork and graphics
- 💡 Original and great concept
- 🕹️ Addictive casual gameplay
- 🎶 Great music and art
- ⚖️ Realistic mechanics
Room to improve
- 😫 Extremely difficult to master
- 😩 Frustrating controls
- 📉 Inconsistent take off mechanic
- ❓ Unclear how to progress/unlock upgrades
- 🔄 Repetitive and monotonous gameplay
PRINCIPLES PROLOGUE
From 58 App Store ratingsWhat we love
- ✨ Stunning graphics and visuals
- 🚀 Smooth performance on high-end devices
- 💡 Innovative technology demonstration
- 🎧 Excellent audio quality
- 🤩 High potential for future games
Room to improve
- ⏳ Very short gameplay duration
- 📱 Overheats on max graphics
- 📉 Performance issues on lower-end devices
- 🕹️ Clunky or imprecise controls
- 🤔 Unclear game purpose or objectives
Bugs and requests
Flyboys
Reported bugs
6 issues- Propeller doesn't engage consistently
- Slider for propeller doesn't work most of the time
- Landing is inconsistent
- Stalls on take off
- Controls go from no response to over-response
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- Bike breaks too easily
Requested features
8 requests- Add more levels after 3000m
- Add new aircraft after achieving Flyboys Badge
- Add more variety or different challenges
- Add altitude/speed reading
- Make the propeller automatic
Show 3 moreShow fewer
- Make upgrades cost money and earn money per run
- Make difficulty variable
- Expand content in future updates
PRINCIPLES PROLOGUE
Reported bugs
4 issues- Game resets to start location
- Game crashes or won't open
- Lag and stuttering during gameplay
- Freezing issues
Requested features
12 requests- Full, playable version of the game
- More gameplay content and continuation
- Improved optimization for wider device compatibility
- Adjustable graphics settings
- Controller support
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- Walk feature for easier movement
- Real-time memory and CPU usage display
- Realistic weapon models
- More story and narrative elements
- Puzzling or RPG elements
- Frame rate limit release and display
- Sprinting and walking options
In-app purchases
Flyboys
- Support Us$5.99
PRINCIPLES PROLOGUE
No in-app purchases
