Jump Bean

For Windows and macOS: Just unzip and your good to go.

For Linux (Example: Pop OS/Ubuntu): Unzip, then right-click the .x86-64 file. Select Permissions and make sure the option "is executable" is on. It might give you a security warning, but that is because the file isn't signed, so therefore it is counted as "Untrusted". Use this method accordingly with your distro.

For Android: There are 2 different methods of doing it.

Method 1. Download the APK directly onto your phone, allow the download, as Android will say this app is not trusted because it is not signed, go to your downloads folder, run it, it will give a lot more security warnings, and then it is on your phone. It is a good idea to re-enable any features you turned off when installing the app, as they are security features that are meant to protect you.

Method 2. Or you get onto a desktop/laptop, unzip and follow the steps here, specifically step 2 and the easier to read and more comprehensive version, here. (Confirmed)

Also a word of warning, since there is no escape button on Android, the only way (as far as I know) to get out of it is to restart your device using the physical keys. I do not own an Android phone but you may be able to swipe up from the bottom to gain access to the home page. The only way this has been tested is through emulators like Samsung RTL, Android Studio, and Bluestacks.