Slide
Move the row of monsters left or right. A quick adjustment can put the next match within reach.
Simple rules. Hungry monsters.
The right color.
At just the right moment.
Rainbow pieces fall from above. Move the monsters together to line up the right hungry face with the right color. Keep matching as the challenge builds.
Match
Catch each falling piece with the monster of the same color. A mismatch costs a life.
Feed
Build matching streaks, discover bonuses and chase a new personal best before your lives run out.
Another way to see the match
Colors can be tricky.
Numbers can help.
Turn on Numbers mode in the information screen to add a number to each monster and falling piece. Match the numbers instead of relying on color alone.
1Red
2Orange
3Yellow
4Green
5Blue
6Indigo
7VioletOriginal game character artwork. This guide illustrates the matching pairs; it is not a screenshot of Numbers mode.
A reason for one more game
A higher score.
A longer streak. A little bragging.
23 achievements
Sign in to Apple Game Center to discover achievements as you play and share your accomplishments.
Leaderboards
Tap the trophy to see Game Center leaderboards and give your next game a score to aim for.
Share your score
Send your high score or last score as an image using the system share sheet. An App Store link invites friends to join the challenge.
Game Center is optional. You can keep playing without signing in. Music and sound effects can each be turned on or off.
Made by Nuifish
A little Nuifish classic.
Still hungry since 2015.
Rainbow Monsters first arrived on the App Store on April 1, 2015. Its colorful cast and simple matching challenge are still at the heart of the game.
Version 1.6 brings refreshed score sharing and reliability improvements while keeping the original gameplay challenge.
Support
A little help for hungry monsters.
How do I move the monsters?
Slide left or right during a game to move the monster row. Line up each falling piece with the matching monster.
How do I turn on Numbers mode?
On the title screen, tap the information button, then enable Numbers. You can also change music and sound effects there.
Do I need to sign in to Game Center?
No. Gameplay works without Game Center. Leaderboards and Game Center achievements require sign-in through Apple. If needed, open Settings > Game Center, sign in, then return to Rainbow Monsters.
How do I share a score?
After a completed game, tap the share button beside High Score or Last Score on the title screen. Choose where to send or save the score image using the system share sheet.
Why did my score change after signing in?
Rainbow Monsters keeps scores associated with player profiles, including a separate profile for play without Game Center. Signing in can display the scores for that Game Center player rather than the unsigned-in profile.
Will deleting the app reset my scores?
Deleting the app removes its local data. Apple backups or iCloud synchronization may make saved information available again, depending on your account and settings. Deleting the app is not a guaranteed way to erase every cloud or backup copy.
Still need help? Email info@nuifish.com with your iPhone model, iOS version and a description of the issue. Please don’t send passwords or payment details.
Privacy policy
Your game.
Apple services. No Nuifish tracking.
Rainbow Monsters has no advertising networks, third-party analytics or cross-app tracking. Nuifish does not operate a server containing your gameplay. Apple services are used for iCloud synchronization and optional Game Center features.
Rainbow Monsters Privacy Policy · Effective September 14, 2026
This policy describes version 1.6 of the Rainbow Monsters iPhone app, developed by Nuifish Limited. It does not describe the hosting, cookies or other data practices of this WordPress website, or older app versions that included advertising or an ad-removal purchase.
Information stored on your device
The app stores information needed to remember your results and choices, including scores, high scores, recent completed-game results, streak information and music, sound and Numbers mode preferences. It can also store pending scores and achievements for later submission to Game Center.
Saved player profiles use Apple Game Center player identifiers when available, or a separate unsigned-in profile. For compatibility with existing saved scores, the app may retain both older and newer Apple player identifiers and the mapping between them. Nuifish does not use these identifiers for advertising or tracking.
iCloud synchronization
Rainbow Monsters uses Apple’s iCloud key-value storage to synchronize saved score records and related player-profile information, including player identifiers and compatibility mappings, when iCloud is available. This information may be sent to Apple and synchronized with devices using the same iCloud account. Nuifish does not operate a separate cloud service containing these records.
Apple handles iCloud account and service information under Apple’s privacy policy. Availability depends on your Apple account, device settings and Apple services.
Game Center
Game Center is optional; you can play without signing in. If you use it, Rainbow Monsters uses Apple player identifiers and submits leaderboard scores, streak results and earned achievements to Apple under the relevant Game Center player profile. Game Center information, including the visibility of leaderboard entries and achievements, is managed by Apple and your Game Center settings.
See Game Center and privacy for Apple’s explanation of that service.
Sharing
A score image is created on your device when you choose to share. The app opens Apple’s system share sheet with the selected score and an App Store download link. The person, app or storage destination you choose controls the shared copy under its own privacy practices. Nuifish does not receive a copy through the app.
Advertising, analytics and diagnostics
Version 1.6 contains no advertising, third-party analytics SDKs or cross-app tracking. It does not send gameplay events to a Nuifish analytics service. Apple may process App Store, operating-system, Game Center and iCloud diagnostics and provide reports to developers according to your settings and Apple’s policies.
Purchases
Version 1.6 does not offer in-app purchases or subscriptions. Any charge to download the app is processed by Apple through the App Store. Nuifish does not receive your payment-card details through the app. Availability and download pricing are shown in your local App Store.
Retention and removal
Removing the app deletes its local app data, subject to Apple device backups and any cloud copies. Reinstalling may make some information available again through Apple services. Removing the app does not necessarily delete information already held in iCloud, Game Center or backups.
Cloud and Game Center information is managed through Apple’s account and service controls where available. Copies of score images you previously saved or shared must be managed at the destination you selected. Nuifish cannot directly erase information held solely in your Apple account.
Children
The app does not ask players to submit personal information to Nuifish and does not knowingly collect personal information from children through gameplay. Optional Apple services are subject to Apple’s account terms, parental controls and privacy practices.
When you contact us
If you email Nuifish, we receive your email address and the information you include so we can answer your support or privacy question. Please avoid including unnecessary personal information, particularly about children. Questions about information you have sent us can be directed to info@nuifish.com.
Changes to this policy
If the app’s functionality or data practices change, we will update this policy and its effective date on this page.
Who makes Rainbow Monsters?
Rainbow Monsters is developed by Nuifish Limited. Contact info@nuifish.com or visit nuifish.com.
Ready for one more game?
How hungry is your high score?
Seven monsters. Falling colors. One more chance to get the match right.
For iPhone · Requires iOS 17.6 or later · No advertising