The principle of SimCity is simple: build it and they will come. Establish a city on an empty plot of land, provide infrastructure and zoning, then sit back to watch it grow. While that core gameplay loop is fun, it is quite short. However, it almost ends up feeling more like a tech demo or proof of concept than a fully-featured game.
Casually browsing game review websites reveals that most contemporary games seem to be considered “good” in the sense that they’re well-made and don’t have critical errors that render them broken. So if most games are “good”, how do you know if a game will be fun for you? That’s not something a review score can tell you.