Breakout-1.2.1.dmg (84 MB)
Breakout-1.2.1-x86.msi (76 MB)
Breakout-1.2.1-x64.msi (78 MB)
breakout-1.2.1-all-platforms.jar (10 MB)
Breakout requires Java 8
After you've installed Java, just open the downloaded file ( breakout-1.2.1-all-platforms.jar) to launch Breakout.
breakout-1.2.1-all-platforms.jar
You may want to copy the program to your system applications folder, but that's up to you.