Well-balanced combat, lots of party make-up choices, good amount of thought required in later battles, lots of items and item levels to give characters specialties of round them off depending on play-style. This is an excellent game. The different classes give it lots of replay value and being able to pass down old items to lower level or previously un-played characters gives you a good edge when playing with a whole different party set-up.
Excellent balance, great gameplay. interesting storyline. Probably the most addictive game on Newgrounds.