Not a very good game. The only thing good about it is the great humor.
There is a limit to how much you can play Kingdom of Loathing in one day. The game is obviously meant to be played at short intervals every day, as it does get boring quickly, and the limit I just mentioned, which lets you explore only a certain amount; every time you click on an area, you use an "adventure point". Whille you can restore a few adventure points and continue exploring, after a while you'll just have to wait for your adventre points to be restored, which happens automatically every day.
The game may keep you busy for a while if you're really bored, but it may actually make you feel even more bored...