I happened upon this browser game about a month ago now, and have to say, I sort of fell in love with it. It is a very spoofy mash up of alot of popular animes, including Naruto, Death Note, Bleach, and endless spoofing off other series of games, comics, and shows. It is actually very well realised in the sense that there is a decent variaty of missons types, rewards, and other such things.
There is even a full guild('village') system in which you can raid each othe rto make off with ryo(game's currency) and resources, as well as plant spies to help you figure out who to raid for what. Among the different bonuses a village can get, there are things that give members better stamina, incresed experince for the different stats, or even protect them or give them extra boosts to certian village related activites. You can even expand the shop the chracters shop at so they can get some very nice gear.
While the missons are done via a random number generator, it follows the DnD mantra of 'Its not what you roll; Its what you can add.' As such, there are allies that you can aquire through missons or quests, and even level them the same way to make them more useful as well as a large assortment of equips and special bonuses granted for bloodlines(think classes, but minimal effect on gameplay). Those same allies can even teach you abblities(called 'Justu', as the game is largly are Naruto parody) that will give you bonuses to certain stats for a misson or even increse your chances of finding rare items or activating events.
In sum, it is a fun little games that you can kill anywhere from 15 mintues to over an hour with a day depending on what all you are doing. It is all pretty funny with a large influence on joking around and such. You can join the village I am in, 'Drunken Village', as there is a decent amount of room and good bonuses, or we can start our own after awhile.
http://www.animecubed.com/billy/?Kaoy
EDIT: Not sure if that link works as a referal thing, but if not, there should be a referer field in the sign up page. My characters name is the same as here, Kaoy, so if you could, plug that in, since I get special items for X ammount of referals.