GenEi AP vs Flat Machine
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
GenEi AP
Embark on a musical quest through a mysterious world inspired by Harumakigohan's art and music. Help the protagonist find songs to please a friend, uncovering secrets behind doors and mysterious heartbeats.
- Explore Harumakigohan's artistic world
- Quest for music and songs
- Uncover mysteries and secrets
- Inspired by Vocaloid music
- Part of a cross-media trilogy
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Travel through the world of Harumakigohan in a quest for music. ”What are you listening to, Mikage?” Spica is looking for something to listen to, and Mikage, the protagonist, goes on a journey in a mysterious world to search for songs that will please her friend. What’s behind that last door? What is that heartbeat you can hear? This game is set in a variety of locations inspired by the work of Vocaloid producers, illustrator, and animator Harumakigohan. If you already love songs like Meltyland Nightmare or Reunion, GenEi AP will be that much more special to you. This is the first work in a cross-media trilogy by Harumakigohan, which will include: - The game “GenEi AP: Empty Heart” - The music album “GenEi EP: Envy Phantom” - The concert “GenEi LV: Harumakigohan One-man Concert 2022”
Flat Machine
Control a limbless robot tasked with defending a settlement in a post-apocalyptic world. Engage in simple, timing-based battles against various threats and make choices that influence the game's multiple endings. Discover the mystery of your own identity.
- Simple, timing-based battles
- Item combination system
- Respond to various visitors
- Multiple endings based on choices
- Daily events and encounters
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■ Story In the not-so-distant future, a world on the brink of ruin. Awakening in the wasteland is a single robot—with no limbs and no memories. You become the settlement's "gatekeeper," fending off the strange visitors who arrive day after day. Can you protect the settlement through its final days? And what is the true nature of the Flat Machine...? ■ Features [1] Easy, satisfying defense battles—just tap! Tap with the right timing to repel the enemies closing in. Simple to play, yet endlessly strategic through gear and item combinations. Build your own ultimate defense style. [2] Your "choices" change the future—multiple endings Not everyone at the gate is an enemy. Help a struggling mutant, or coldly turn it away? Your decisions steer the story to its ending in this rich sci-fi adventure. [3] Charming pixel art and a wistful apocalyptic world Lovable yet lonely characters brought to life in beautiful retro pixel art. An original atmosphere, deepened by a carefully crafted soundtrack. ■ Perfect for players who love - Pixel-art (retro) games - Dystopian, sci-fi, and apocalyptic worlds - Story-driven indie games - Quick, pick-up-and-play sessions - Tower defense, idle games, and RPGs - Playing free to the end, at your own pace, with no stamina Step into the "everyday apocalypse" woven by an amnesiac gatekeeper robot and the inhabitants of a dying world.
Screenshots
Verdict
The clearest difference is in-app purchases: GenEi AP at none against Flat Machine's 4. GenEi AP also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). Flat Machine's advantage is update cadence (every 5 days vs every 2 months). On price, rating, review sentiment and ratings volume 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. Flat Machine sells 4 one-off in-app purchases. GenEi AP asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for GenEi AP against 4.9 for Flat Machine. Both are backed by a comparable volume of ratings — 131 and 68 respectively. Written reviews split almost evenly too, at 93% and 94% positive.
GenEi AP ships an update every 2 months, Flat Machine every 5 days. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.
| Parameter | GenEi AP | Flat Machine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (131 ratings) — better | 4.9 (68 ratings) |
| Positive reviews | 92.9% of reviews | 93.7% of reviews — better |
| Number of ratings | 131 — better | 68 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 280 MB | 118 MB |
| Age rating | 4+ | 12+ |
| Developer | room6 LLC. | zxima.LLC |
Customer experience
GenEi AP
Flat Machine
User reviews
GenEi AP
From 131 App Store ratingsWhat we love
- 💖 Beautiful pixel art
- 🎶 Amazing music
- 📖 Engaging story
- 😌 Relaxing atmosphere
- ✨ Emotional impact
Room to improve
- ⏳ Story is too short
- 🤔 Puzzles can be difficult
- 🗺️ Map can be confusing
- 🤷♀️ Some don't understand the story
- 🎶 Music not to everyone's taste
Flat Machine
From 68 App Store ratingsWhat we love
- 👍 Highly engaging gameplay
- 💖 Compelling characters and story
- 💡 Multiple endings and replayability
- ✨ Unique post-apocalyptic world
- 🎮 Satisfying progression and strategy
Room to improve
- 🐛 Ad issues (app store redirection)
- 🐛 Ads sometimes break BGM
- ⚖️ Endless mode can feel like pure luck
- ❓ Some events seem to have limited interactions
- 🚫 Lack of Chinese translation
Bugs and requests
GenEi AP
Requested features
4 requests- Add a reset button
- Make more games like this
- Add a rhythm game function
- Create a sequel or update
Flat Machine
Reported bugs
4 issues- Ads redirect to app store and prevent item rewards
- Ad BGM continues playing after ad ends
- Ad BGM persists even after restarting app
- Agoda ads prevent continuing the game
Requested features
6 requests- Add Chinese translation
- Add Vietnamese translation
- Add Spanish translation
- Option for one-time purchase to remove ads
- More interactions with certain characters (e.g., training robot)
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- Consider adding taxi or bakery characters in future works
In-app purchases
GenEi AP
No in-app purchases
Flat Machine
- AD removal$2.99
- Donation(S)$3.99
- Donation(M)$14.99
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- Donation(L)$34.99
Questions
Is GenEi AP free?
Is Flat Machine free?
Which has better reviews, GenEi AP or Flat Machine?
Do GenEi AP or Flat Machine have ads?
Which is updated more often, GenEi AP or Flat Machine?
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