Problem-solving game - find the optimal moves to move one robot to its target
About this app
An Android-based application like the board game "Ricochet Robots ©". It includes an artificial intelligence capable of solving the puzzles.
A simple but challenging puzzle game.
You control four robots in a yard full of hedges, that block their way. The goal is to guide a particular robot to its destination. The robots move until they either hit a hedge or another robot.
The special feature of this app is the automatic solution finding algorithm, which can show you hints and also the optimal solution.
Can you find the solution with the fewest moves?
This game is open source and shipped without adds.
Source code: https://roboyard.z11.de/
Supported languages: English, German (Deutsch), French (Français), Spanish (Español), Chinese (中文), Korean (한국어), Japanese (日本語) and Portuguese (Português do Brasil)
Full accessibility: The game is fully playable for blind players and supports all accessibility features with TalkBack.
Licensed under GPL-3.0-only, by Ruben Barkow-Kuder.
What's New in v52
Imported from the F-Droid repository index.
- - Added long-press protection in game screen for New Game
- - Added history navigation in game screen
- - Fixed keep login when session expires
- - Improved button-size across different devices and UI scaling
- - Added deep link support for random game from web
- - Full changelog on https://github.com/Eastcoast-Laboratories/Roboyard/blob/master/CHANGELOG.md
Version history
Jun 20, 2026 · 11.6 MB · Android API 21–36 · code 140
Imported from the F-Droid repository index.
- - Added long-press protection in game screen for New Game
- - Added history navigation in game screen
- - Fixed keep login when session expires
- - Improved button-size across different devices and UI scaling
- - Added deep link support for random game from web
- - Full changelog on https://github.com/Eastcoast-Laboratories/Roboyard/blob/master/CHANGELOG.md
SHA-256 650a1fed9cb33a429ecdcd4ffa156bd075382a325c9bde1b61b4f8e55634a35d
May 14, 2026 · 11.6 MB · Android API 21–36 · code 136
Imported from the F-Droid repository index.
- - Fixed share button in save screen
- - Fixed streak sync issue consuming next-day login
- - Improved hints showing the robot to move in background in all languages
- - Updated hint wording in German and Polish
- - Added View Error Logs button for easier bug reporting
- - Fixed external map loading
SHA-256 77bcb0293c8d01ed8f52010cb15488299d00dc70252343f256abfc4e692ef956
Apr 20, 2026 · 14.8 MB · Android API 21–36 · code 132
Imported from the F-Droid repository index.
- - Switch between English, German, Spanish, French, Korean, Chinese, Japanese, Polish and Portuguese (Brazil)
- - Fix level selection crash in landscape mode
- - Speedup achievement screen loading
- - Fix streak sync with server
- - Full changelog on https://github.com/Eastcoast-Laboratories/Roboyard/blob/master/CHANGELOG.md
SHA-256 9a1855ee23ff4463f45d06892972daa7b89726d5d486ad57e830648a59fa98a4
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be de.z11.roboyard is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 51 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Roboyard first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Roboyard, and a listing is removed when the evidence for it stops holding up.
Get Roboyard
Every source we list for de.z11.roboyard is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
650a1fed9cb33a429ecdcd4ffa156bd075382a325c9bde1b61b4f8e55634a35d
Signing certificate
c8feba941949e5f0b6c9b7e20eaf52a5c1d4864f4cbbeb39fae9b7e19d1336b0
Permissions Required
What each permission lets Roboyard do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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