To actually answer your question, Wurm Online is an MMO based on player governance of a medeival-like world, with terraforming and construction as a focus. Basically one big medeival role play Minecraft server. It’s a bunch of fun though, if you can find the time to literally build a village from the ground up in your free time.

Apparently similarly mechanically powered displays involving cams to actuate number segments were pretty popular back in the day. Here’s a YouTube video I came across one day a while back about one: https://youtu.be/TANe2d0VTGQ