Yeah. Maybe if something could reach out of the monitor and slap my face? Nah, even that would become ignorable eventually.
More prominent indicator that it's your move

@turdmeister you need an external slapping device. It has been invented, multiple times.

Make the sound more customizable. You could possibly upload your own sound, have some settings to make it last as long as you want, and it's volume. You could even upload a visual alarm.
I keep dropping seconds off my clock simply from not realising it's my move. It would be nice if there was a more prominent indicator. For example, if the rectangle with your colour would throb slowly.