I’m far from 30, but at one time I became interested in retro games, and Quake is one of the best.
I like Quake the first more than Quake the second, because the first one plays much more cheerfully and the game itself seems more exciting.
Quake is essentially like Doom, only darker and with new (at that time of course) technologies. Quake is a very confusing game with its labyrinths, in which I got lost like an idiot, and then found a way out in the most obvious place. If you like dynamic shooters, then be sure to try the first Quack, it's a top toy :)