Flanker 2.5 is the second major release of SSI's realistic air combat simulator based on the Russian Su-27 & Su-33 Flanker. Like its predecessor, the game features a comprehensive simulation of the jets' avionics and weapons systems, with a focus on beyond-visual-range air-to-air combat. Mastery of the Flanker's various radar and weapon systems is essential to the player's survival Improvements for this second release include 3D accelerated texture-mapped graphics and the addition of the Su-33 naval variant of the Flanker. The main difference would be that the Su-27 is a pure air superiority fighter while the Su-33 retains a ground attack role. Incremental improvements included flight model and weapons model revisions, graphic and stability enhancements, the addition of wingman commands, and the ability to fly the MiG-29 jet fighter.