At one time this was apparently one of the idle genre's classics. It hasn't aged well.
In overall structure it's somewhat similar to Cookie Clicker, in building up units of producers whose bonuses interact with each other in different ways and with a significantly expanding gameplay loop as you go. But many of its design choices are a product of its time. There's very little direction, even about the general structure of the game (for example, upgrades unlock on reaching certain increments of units such as 10, 25, or 100, but there's no clue of that anywhere in the game itself -- players presumably are supposed to have the genre knowledge to know when to press for advancements). And some upgrades are so crucial as to entirely upend your play style -- such as bloodhounds powering up off of craftsmen^4 after acquiring 50 craftsmen, which seem utterly useless up until that point. But you have to stumble across that fact, because the game's wiki is now a dead link and it's getting increasingly hard to find guides.
The game, in fact, doesn't even work unless you take special steps to launch it. Modern browsers will automatically go to an https link for the game page, but that will break half the UI and render the game unplayable. You need to specifically go to the http version of the game page in order to play. And since I didn't discover that the https version is unplayable for about two hours, and since the save/load tab is one of the things that's broken, it cost me several hours of progress to restart from scratch. Finally, there's zero offline progress.
In between the heavy grind, the lack of structure and outside resources, and the outdated/broken tech layer, your time is better spent on newer games that have better iterated on this one's formula, unless you're playing it specifically for nostalgia reasons. Or play one of the classics that HAS stood the test of time, such as Crank, A Dark Room, Universal Paperclips, or even the OG Cookie Clicker.