Experiment Z - Zombie v2.15
APK · 47.8 MB · version code 72 · Android 4.1+ · uploaded Jun 9, 2020
- Same certificate as v2.16, which matches Google Play Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v2.16, uploaded Sep 26, 2026 — about 6 years after this one.
- Size: this file is 47.8 MB; the latest is 62.5 MB (14.7 MB larger).
- Android: this version needs Android 4.1+; the latest needs Android 6.0+. Use this one if your device runs an older Android release.
- The latest version asks for 6 more permissions: Access adservices ad id, Access adservices attribution, Access adservices topics, Run foreground services, Internal broadcast protection (app-defined), Advertising ID.
- The latest version no longer asks for: Precise location, View Wi-Fi connections, Modify audio settings, Record audio (microphone), Receive push notifications, Google Play install referrer.
File information
- Version
- v2.15 (72)
- Uploaded
- Jun 9, 2020
- Size
- 47.8 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- b79ba4056a7627d4aaba42d83072244d
- Signing certificate (SHA-1)
- 77:28:4E:B4:6A:31:07:69:32:1E:FE:58:FD:22:3E:42:54:4F:71:8D
- Signed by
- C=ca, ST=bc, O=cyclopsgames, CN=M Charleson
- File name
- com-cyclopsgames-experimentz-72-51973866-b79ba4056a7627d4aaba42d83072244d.apk
- Package
- com.cyclopsgames.experimentz
- Downloads (all versions)
- 10M+
- Age rating
- PEGI 16 · Medium Maturity
What's new in v2.15
- Swap control side option
- Increased melee weapon damage
- Fixed unusable scope
Game data (OBB)
This game needs extra data files (65.1 MB) next to the APK. Their download links appear once the download is unlocked.
- Main OBB
- main.72.com.cyclopsgames.experimentz.obb (65.1 MB)
- Main OBB MD5
- 104002e34f5fe58228e62a3eba5903a1
Permissions (11)
This version requests 11 permissions, 3 of them sensitive.
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “cyclopsgames” This is the certificate of the Google Play version.
- Same certificate as v2.16, which matches Google Play v2.16
Store checks
- Developer signature under review Sep 26, 2026
- Antivirus scan passed Sep 16, 2020
- Uploaded by “split-store” Gold tier · 24,358 followers · uploading since 2019
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install Experiment Z - Zombie on Android 4.1+
You'll need about 160.8 MB of free space (the APK plus 65.1 MB of game data).
- Download the APK — tap Download APK above (47.8 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-cyclopsgames-experimentz-72-51973866-b79ba4056a7627d4aaba42d83072244d.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be b79ba4056a7627d4aaba42d83072244d. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Copy the game data — before the first launch, move the OBB file (65.1 MB), without renaming or unzipping, into Android/obb/com.cyclopsgames.experimentz/. On Android 11 and later many file managers can't open that folder; use the built-in Files app or copy it from a computer over USB.
- Open Experiment Z - Zombie — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.