Overall :
(This is a Disgaea 2 Review...)
If you liked the previous Disgaea,this one ought to be of your liking as well.Though I recommend the PSP version as there is much more content in the PSP version (Surprisingly enough.) There are also ALOT of things you need to do in order to get a 100% for this game.Expect to grind alot but this game is surprisingly addictive. ( :P I was addicted to the previous Disgaea as well come to think of it.) Either way...here are the list of gameplay elements.

(I'm a bit lazy so I copied the text from my other review on another site :P Though I would try to add a bit more info )

Gameplay :
Disgaea holds a strong fort on it's RPG elements and of course,the Turn Based Tactical Genre involved in the gameplay.