Stats of Import
Absurdly Specific Genre: It Gets Worse: The Video Game
Difficulty: On the default difficulty, probably a 6. Higher levels were more of an 8.
Beaten: On normal and nightmare difficulties, though I never get obsessive over it like some folk.
The Diablo series asked you to believe in a formula. It's the same formula that various RPGs and hack'n'slashers have been trading on for years, but Diablo distilled it to its most base form: kill gear, get weapons, kill bigger stuff, get better gear - loop infinite. It was essentially an MMORPG, minus all that pesky human interaction (though it was actually a fantastic co-op game, my brother and I beat it together several times). I bought into the formula with every bit of gusto that I could muster.
Many (many, many, many) other games have attempted to do what Diablo 2 did, but I've never been as captivated by any of them. Diablo 2 made the grind a joy, a feat I would've thought to be impossible.
Other Notable Games in the Series: The first Diablo was a fun way to pass the time in Professional Development class. It was everything Diablo 2 was, but less. When I made up the full list, it fell somewhere in the 70s. Torchlight isn't technically a Diablo game, but let's face it, it may as well be. It's lots of fun, but would probably fall somewhere in the mid 50's.