JoyBoy.Club
AI pixel games from a sentence
Only for iPhone
Free · In‑App Purchases
iPhone
New in 1.3: real stakes, worlds in daylight, personal bests and a World of the Day. Type one sentence and get a playable pixel game, made and tested for you.
Say a game. Get a world.
Type one sentence, or say it. JoyBoy.Club designs a small pixel game from it, plays it to make sure it is fair, and puts it on your shelf.
"A lifeguard paddling out to swimmers caught in the rip." "A postal worker on a bicycle, tossing parcels onto porches while dogs give chase." Every world in the app began as a sentence like these.
PLAY FREE, NO ACCOUNT
Fourteen hand-built worlds and a growing universe of worlds made by members. Free to play, with no account and no ads. A different World of the Day waits on the Create screen.
• Tide Pool: work the wet sand for shells and beat the tide home
• Touchdown: land a supply pod on a pad that keeps shrinking
• Sled Run: steer through the flags with an avalanche behind you
• Hollow Keep: light four dark halls with a lantern and a sword
• Paper Round: land the paper on a porch as it slides past
• Moon Raid: cross the yard only while the window light looks away
…and the rest of the shelf.
EVERY WORLD IS A RUN
Stages that change the scene, a set piece at the end of each, and upgrades earned along the way. When the last heart goes, a continue puts you back in at the same stage with the same score. In the hand-built worlds, two cracked half-hearts warn you before a heart is lost. Your best score is kept for every world you play.
HOW A WORLD IS MADE
1. You type or say one sentence.
2. An AI model designs the game and writes its code.
3. Our console plays it at several levels of skill, including a deliberately clumsy one, and once with nobody at the controls.
4. An inspector scores craft, fun, fairness and how closely the game follows your sentence. Anything unfair, dull, or able to play itself goes back for another round.
5. It lands on your shelf, private. Send it to the universe when you are ready.
Building takes fifteen to forty minutes and continues with the app closed. You can be notified when it lands.
PRICING
Playing is free. Your first world is free. After that, a world costs one credit: 3 for US$0.99, 10 for US$1.99, 30 for US$4.99. These are one-time purchases; nothing renews and nothing expires. If a world does not reach our bar, its credit is returned.
DETAILS
• Screen shake, flashes and haptics, with Reduce Motion respected
• Plays with the silent switch on
• Leave the app to pause; resume with a count-in
• Portrait or landscape, stick or d-pad
• Shared links open the world in the app
TERMS
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://joyboy.club/app/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• A first launch opens on a game already playing.
• Every hit is felt: screen shake, flashes and, on iPhone, haptics.
• Real stakes in the hand-built worlds: two cracked half-hearts warn you before a heart is lost, and each run has two continues.
• Worlds in daylight, alongside the night ones.
• Animals that look like animals, and music that develops over a run.
• Personal bests, a Recently Played shelf and a World of the Day.
• Leaving the app pauses your run; it resumes with a 3-2-1 count-in.
• Games play with the silent switch on, and your own music keeps playing until a game starts.
• Smoother play, and a notification when your world lands.
• Shared joyboy.club links open in the app.
The developer, LIANG LIAO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LIANG LIAO
- Size
- 425 KB
- Category
- Casual
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Cartoon or Fantasy Violence
Contains
User-Generated Content
- In-App Purchases
Yes
- 3 worlds $0.99
- 30 worlds $4.99
- 10 worlds $1.99
- Member, monthly $9.99
- Member, yearly $59.99
- Copyright
- © 2026 Liang Liao
