Square Enix are notorious for bleeding their intellectual properties dry. You like Final Fantasy? Here's 119 Final Fantasy games, etc etc. And now that Square owns Eidos, things are only going to get worse.
Addressing shareholders following Square's purchase of Eidos, Square Enix boss Yoichi "Imperial Hot" Wada told of the company's success in creating a "number of deliverables from one worldview" for their franchises. Which is corporate speak for "we make a fuckton of money from Final Fantasy spin-offs, anime and toys".
He then said this was something that Eidos - another company with strong internal IP - had been lacking. But no more! With franchises like Tomb Raider, Hitman and... Kane & Lynch now a part of the Square Enix marketing juggernaut, Wada says "we are considering creating synergy by diversifying revenue sources for each Eidos IP, applying our approach".
"Our approach" being, you guessed it, an endless stream of Tomb Raider toys, cartoons, mobile games, WiiWare games, and iPhone games.