I think the best games do this. Cara men­tioned the FPS exam­ple, but to be frank, it applies to any­thing: card games; beat-em-ups; sports; real-time-strat­e­gy. The first read has to be clear, broad: grokkable, and also aes­thet­i­cal­ly entic­ing. Once enticed, you need that detail to repeat, to be frac­tal, to be backed up by sub­stance. And then, as you delve deep­er, into exper­tise and expe­ri­ence, there’s still depth to reward you, but it nev­er clash­es against that first read you had, the thing that sucked you in.