Addicted to Crystal
The plot in Crystal Story is comically generic. An evil witch steals a magic crystal from the land of Crystalia. Shortly afterward, a fishy knight enlists the help of our four heroes to defeat the witch but give him all the credit for her capture. So they all set off for Evil Cave, battling monsters and blobs of slime, in the hopes of saving the world. The personalities of the heroes in your party are also (somewhat painfully)—you've got Tristam, the Earnest; Kaeli, the Dour; Phoebe, the Ditz; and Reuben, the Horny. Fortunately, the cutscenes are sparse enough to make exchanges that sound like this mildly amusing:
Tristam: We're on the case!
Reuben: Ma'am, it would be my honor to kiss your hand.
Kaeli: Go away, Reuben.
Phoebe: YAY I WILL HIT THE BAD WITCH WITH MY HAMMER WEEEE.
Of course, each of these characters gets to embody one of the typical character classes—Warrior, Mage, Rogue, and Healer. One thing that I like about CS is that there's a lot of flexibility in assigning Ability Points. None of the characters have designated classes, so Kaeli can be the Healer in one game and the Warrior in another. Theoretically, you can drop a character class all together and try your luck with two Mages, for example. You can also reset your characters' Ability Points for a fee at any time during the game, so you can completely readjust your strategy on a whim.
Here's why the game is so successful: there's a huge variety of enemies that are randomly generated in each room, lots of cool spells and upgradable equipment, and side quests to keep you busy. Every two floors a new miniboss appears (each with its own reward), so you're never stuck in endless grinds wondering when things are going to get interesting. The minibosses also have endearing descriptions like "King Slime likes long walks on the beach and ponies" and "Zombieking likes to eat ponies."
My main gripe with the game is that not all of the artwork is totally up to snuff. The enemies are nicely drawn, but the cave lacks detail and the characters themselves look like your run-of-the-mill anime fan art. This wasn't really distracting until I met Bubbles, the woman whose cat I was supposed to rescue, who is about as accurately represented as the fresco Jesus restoration painting.
AAHHH LOOK AWAY