Just tried out using the minimal clock screensave on macOS Mojave and it says you can not use this screensave with this version of macOS
Freddie3 weeks agomacOS 10.14.3, Google Chrome
Unfortunately, Apple hasn't made an effort to ensure backward compatibility for screensavers in macOS Mojave. Quite a few screensavers have stopped working following that update. I'm afraid Minimal Clock is unlikely to be updated.
Sorry for the inconvenience! I'll keep an eye out for updates.
Rob (Screensavers Planet)3 weeks ago