There IS a sixth series in the entire .hack world, called dusk. Its fun if you're young/enjoy chibi humor., oh and its short too. I'd like to try the games too, i find it *really* damn interesting a company is going to these measures to release a large game relatively close, probably to keep it intact. (Not like the gaia series enix made, soul breaker (or something), illusion of gaia, and terranigma - there's such a big difference in each of them they dont feel like the same thing)