Full Tilt Poker is an Irish online poker card room and online casino that opened in June 2004. Formerly privately owned by Tiltware, LLC and later by the Rational Entertainment Group the site was acquired by The Stars Group in a deal where Amaya acquired all of Rationals assets and including PokerStars. Full Tilt Poker is an Irish online poker card room and online casino that opened in June 2004. Formerly privately owned by Tiltware, LLC and later by the Rational Entertainment Group the site was acquired by The Stars Group in a deal where Amaya acquired all of Rationals assets and including PokerStars.