PS2 exclusive game modes include Endless Mode and Challenge Mode which features 40 mini fighting games. A Gallery Mode brims with full-color artwork and sketches while gamers in search of a challenge may hook up with other fighters in the Network Match Mode. Two new systems are introduced in KOF XI - the first is the Judgment System which decides the winner not by the amount of HP remaining but by the quality of your attacks and combinations. The second new system is the use of Skill Stocks which deplete when evasive moves are pulled off.
Upon starting the game, 33 fighters are shown in the character selection screen which are grouped in four batches of six along with a batch of nine in the middle of the screen. After selecting three fighters and designating team leader and order of battle, a match starts. Movement may be directed with either the D-pad or L-analog stick.