CrazySoft, perhaps better known for their puzzle games, have released a rather good adventure game called The Final Battle, which has been reviewed over on All About Symbian. It's an S60 3rd Edition game, which means it's 100% compatible with Next Gen N-Gage phones, and the review itself was done with a Nokia N93.

One thing you might want to note about the review is that the game was also tested on a television set, which can have a surprisingly large effect on how enjoyable a portable game is, and how good the graphics look. On The Final Battle, the use of a television actually improves gameplay because it's easier to see small but important game objects.