Following the release and strong sales performance of 2K Boston and 2K Australia's story-driven underwater shooter BioShock (PC, X360) last summer, Zelnick noted Take-Two's intent to transform BioShock into an ongoing franchise.

A sequel to BioShock, announced earlier this month and developed by 2K Marin with the involvement of creator Ken Levine, is slated to arrive on unspecified platforms between August and October of 2009.

As initially reported by MTV Multiplayer, other opportunities for Take-Two, which today told its stockholders to reject a hostile takeover bid from Electronic Arts, include a film adaptation of BioShock as well as mobile phone iterations of both BioShock and Carnival Games.