Quickstart

1. Open the file you downloaded, wopr_0.6.0_windows_setup.exe: click it in your browser’s downloads, or double-click it in your Downloads folder. If the browser says that the file is not commonly downloaded, choose to keep it.
2. If Windows says Windows protected your PC, click More info, then Run anyway. Windows warns because the installer is not signed yet. That is also why it says Unknown publisher.
3. Click Next, then Install, then Finish. The installer does not ask for an administrator’s password. It also adds WOPR to your PATH, so that typing wopr in a terminal starts it, unless you untick that box on the first page.
4. WOPR opens in a terminal window and starts dialing.
5. To play again later, open the Start menu and click WOPR in the list of apps, or search for it.

If Windows says that Smart App Control blocked the installer, the installer cannot run while Smart App Control is on, because it is not signed yet. Troubleshooting says what you can do.

To update WOPR, run a newer installer the same way: it replaces the old version. To remove it, see Uninstall.

1. Open the file you downloaded, wopr_0.6.0_macos.dmg. A window shows WOPR and an Applications folder.
2. Drag WOPR onto Applications. Do this before you open WOPR: it may not start from the Downloads folder or from the disk image. You can then eject the WOPR disk in Finder’s sidebar.
3. Open WOPR from your Applications folder, from Apps in the Dock, or with Spotlight.
4. The first time, macOS says that it could not verify that WOPR is free of malware, because Apple has not signed WOPR yet. Click Done, then:
   1. Open the Apple menu, then System Settings, then Privacy & Security in the sidebar. You may need to scroll down to it.
   2. Scroll down to Security, where it says that WOPR was blocked, and click Open Anyway. The button stays there for about an hour after you tried to open WOPR. If it is gone, open WOPR again.
   3. macOS asks once more: click Open Anyway (or Open), and enter your password or use Touch ID.
5. WOPR opens in a Terminal window and starts dialing. The Dock shows Terminal’s icon. From then on, WOPR opens like any other app.

The app always opens in Terminal. It does not add a wopr command to your terminal: for that, also install WOPR from the command line. To update WOPR, drag the new app to Applications in the same way. macOS may ask you to allow it again. To remove it, see Uninstall.

For Debian, Ubuntu, Linux Mint and their relatives:

For Fedora, RHEL, CentOS Stream, Rocky Linux, AlmaLinux and their relatives:

Then open the file you downloaded: click it in your browser’s downloads, or double-click it in your Downloads folder. Your desktop’s software app opens, such as Software on Fedora, and offers to install it. On Ubuntu, App Center opens and warns that the package comes from a third party. Click Install.

To play, open a terminal and type wopr. You can also click WOPR in your app menu, which opens it in a terminal window. Right-click it to start Chess, Checkers, Tic-Tac-Toe, Global Thermonuclear War or Movie Mode at once. The package also installs the manual page, man wopr. To remove it, see Uninstall.

wopr’s key signs both packages. The .rpm carries its signature inside it. The .deb’s signature is a separate file on the release page, named after the package with .asc on the end, such as wopr_0.6.0-1_amd64.deb.asc. It is separate because apt does not check a signature inside a package you download. To check either package before you install it, see Verifying binaries. The Linux (RPM) line in Command line install methods makes dnf check the signature as it installs the package.

If your software app will not install the package, install WOPR from the command line. Do the same on another Linux, such as openSUSE, or Fedora Silverblue and the other atomic desktops.