What’s up with each cell tycoon video games having this very same round inexperienced timer?

I've been taking part in a number of tycoon video games, from totally different builders, however for some motive, each single one in all them has this very same design, identical shade, identical margins, identical radius/dimension, identical and so on for the length/timer countdown. What's up with this? Is that this a Unity template?

Not saying it appears unhealthy, however the very same design is getting boring to me.