The GURPS system offers a crunchy, comprehensive rules set that covers virtually every aspect of gameplay. As one player of mine put it, “There’s a rule anything you can name.”
Players who enjoy rules heavy games, such as D&D 3.0. Pathfinder 1.0, etc., should enjoy it. Having played all 3, GURPS definitely presents the most character balance among the different fantasy character builds and abilities. However, presenting a rules heavy game to new players can be a challenge.
In my latest YouTube video, I go over my results demoing the game at North Texas RPG Con. The players who played it enjoyed it, and even found the system fairly intuitive.
Unfortunately, hallmark of GURPS, is that it places a lot of work on the GM. In this case, I took many hours to take the pre-generated characters and create custom sheets that detailed all the rules they needed to play in a manner a new player could understand. I found this step quite crucial, and those wishing to demo the game for their friends can contact me for the sheets.