Plug in your gamepad, select it from the list… and press start to begin your adventures. Via the Controller Preferences, simply auto- magically assign buttons with any generic HID compliant USB or Bluetooth game controller. Why restrict yourself to just the keyboard? Although it is not a requirement, OpenEmu is best used with a peripheral gamepad or controller to interact with your games. Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start OpenEmu uses a modular architecture, allowing for game-engine plugins, allowing OpenEmu to support a host of different emulation engines and back ends while retaining the familiar macOS native front end. One third-party library example is Sparkle, which is used for auto-updating. The project leverages modern macOS technologies, such as Cocoa, Core Animation with Quartz Composer, and other third-party libraries. OpenEmu is an open source project whose purpose is to bring macOS game emulation into the realm of first class citizenship.