Lloyd's 4-Pointed Dice for the Royal Game of Ur

Copyright 2023 Lloyd Rieber


Download the Software

Download the Macintosh Version

Download the Windows Version

Note: Neither the Macintosh or Windows version is a certified app. You will need to override the security blocks in order to run the software. See the notes below on how to bypass the security blocks.


  • Launch the app.
  • To toss the dice, click anywhere in the app window or press the space bar.  

Read about the making of this app.

Bypassing the Macintosh or Windows Security Blocks


  • After you download and unzip the software file, click on the ".exe' file to open the app. You will see a screen titled "Windows Protected Your PC."
  • Click on the link titled "More Info."
  • Choose to "Run Anyway."


  • After you download and unzip the software file, double-click on the app to open it. You will see a message saying that the app cannot be opened because Apple cannot check it for malicious content.
  • Click the "?" symbol and follow the instructions for granting an exception. Below is a copy of the instructions from Apple.

    Using an app that can’t be checked for malicious software might harm your Mac or compromise your privacy. If you’re certain that the app you want to use is from a trustworthy source, you can override your Mac security settings to open it.

    In the Finder on your Mac, locate the app you want to open.

    Don’t use Launchpad to locate the app.

    Control-click the app icon, then choose Open from the shortcut menu.

    Click Open.

    The app is saved as an exception to your security settings, and you can open it at any time by double-clicking it, just as you do with any registered app.

    Note: You can also grant an exception for a blocked app by clicking the Open Anyway button in the General pane of Security & Privacy preferences. This button is available for about an hour after you try to open the app.

    To change these preferences on your Mac, choose Apple menu > System Preferences, click Security & Privacy , then click General.