I can't get the controller emulator to work in Unity 5.6b3 under Arch Linux 64-bit. In Play mode, the console shows the following: "Android Debug Bridge (`adb`) command not found. Verify that the Android SDK is installed and that the directory containing `adb` is included in your PATH environment variable." In Windows, you have to add the directory containing the Android Debug Bridge (adb) program to the PATH environment variable in Windows itself (not in the Unity program). You have to do the same in Linux, evidently, to get Unity to locate adb and therefore get the Controller Emulator phone working. I've added the following line in my .bashrc file in my home directory: "PATH=~/Android/Sdk/platform-tools/:$PATH" This, however, doesn't fix the issue. I don't know how to add the directory containing adb to the PATH environment variable that Unity needs to make the Controller Emulator work. Is anyone else having this issue? Is there a fix or work-around?