MEmu, also called MEmu Play, is an Android emulator for Windows PCs. It runs a complete Android system in a desktop window. Users can install and use Android games and apps as on a phone, but control them with a keyboard, mouse or gamepad. MEmu is free and supported by advertisements; a separate MEmu for Business edition is offered to companies.
How the virtual Android device works
MEmu uses the processor’s hardware virtualization (Intel VT-x or AMD-V) to build a virtual machine. Android treats it as a real device, with simulated CPU cores, memory, storage, SD card, Wi-Fi, battery, camera, GPS and sensors. On the Windows side, each Android device lives in files on the PC.
The current MEmu engine is based on Android 9, which runs more recent games than the older Android 7.1 engine. Users can still choose older images for new instances. Android 5.1 is more stable on low-end PCs and suits older games. A 32-bit image cannot run apps that require 64-bit.
Each instance gets its own share of CPU cores and memory, and the total for all running instances should stay below the PC’s physical resources. MEmu can draw graphics with OpenGL, Vulkan or DirectX. A game that crashes in one mode may run in another. A root switch allows or blocks root permission for apps, since some games refuse to run on a rooted device.
Installing apps and sharing files
Apps reach MEmu through Google Play after signing in with a Google account, or from APK files downloaded elsewhere. Installed apps can also be exported back out as APK files. For other files, MEmu shares several folders between Windows and Android. A file moved into one of them with Android’s file manager appears in the matching Windows folder. Users can change the Windows locations in the settings.
Keyboard, mouse and gamepad mapping
Users play touch games in MEmu by placing virtual controls over the game screen. The Keyboard button in the sidebar opens the mapping editor, where users drag controls onto the matching spots. A steering wheel or WASD control goes on the movement area. Skill keys go on an action RPG’s ability buttons. For shooters, users place a fire key plus a crosshair key that turns mouse movement into aiming. A connected gamepad is mapped the same way. Layouts can be exported and imported as configuration files.
Smart Key adds image detection to this system. MEmu recognizes the current game scene and moves the F key to whatever action is available, such as entering a vehicle or opening a door. Opening a backpack or map releases the mouse pointer automatically, and the mouse wheel zooms the map or scope. It is aimed at shooters such as PUBG, Call of Duty and Free Fire.
A macro key runs a whole sequence from one keypress. It is written in a small script editor with commands for touches, swipes, key presses, text input and loops.
Operation Recorder
The Operation Recorder captures input during a recorded session and saves it as a script for later playback. Scripts can be edited, imported, exported and combined into longer sequences. Playback can add small random offsets to click positions. It can also stop automatically when the device returns to the Android home screen, for example after a game crash.
Multi-MEmu and the Synchronizer
Multi-MEmu is the separate manager for running several Android devices at once. These can run several accounts of one game or different games side by side. It creates instances from a chosen Android image, starts, closes and deletes them, and clones them. A clone copies the original’s data but receives new device identifiers such as IMEI and MAC address. Users can export instances as backups and import them from .ova or .memu files. They can also compact instances to reclaim space left by uninstalled apps. The manager also filters instances by name, Android version or status and arranges open windows into a layout. There is no fixed instance limit; RAM and other hardware set the practical number.
The Synchronizer mirrors input across instances. The user selects which running instances to include. The Synchronizer repeats actions from one window in the others. This works best when all of them use the same resolution.
Command-line control
MEmu also includes command-line tools for automation outside the interface. They can start, stop, create and clone instances, install APK files into a chosen instance, and change CPU and memory allocations. They can also forward network ports including ADB access and set the device properties Android reports, such as model, manufacturer and screen resolution.
MEmu for Business
MEmu for Business is aimed at app developers, testers and companies distributing Android software. It removes all advertisements and can package an Android APK as Windows software with a customized icon, interface and functions. It can also notify clients when the packaged app updates and includes professional online customer support.
