.hack//Versus is bundled with the film .hack//Sekai no Mukou ni on a single hybrid Blu-ray disc. The game . Like the movie, the game is presented in steroscopic 3D. The game is set in an enclosed field where each of the eight playable characters have a different move set. Gameplay is heavily based around a tension gauge at the bottom of the screen, which fills up as a player takes damage or attacks. Special skills, exceeds, ultimate skills, dashes, and crack bursts deplete the tension bar, so players will need to pay careful attention to how full it is.
In story mode, the game's plot follows that of the film. The player advances through the ranks of a tournament, increasing their player rank by defeating opponents, as well as shadow versions of their opponents, or even their own character. Story points are revealed through in game messages or posts made on the in-game Yomoyama Records message board. During fights, players can complete missions which ties into the letter score earned for winning a match, as well as trophies. The story mode includes a 'Versus Rankers' section, which allows the player to see their position on the story mode's leader board, as well as challenge NPCs, or watch replays of their own fights. Watching replays unlocks new weapons and support items; additionally, replays will earn 'comments' based on how well the player fights. Fighting in matches will also unlock in-game wallpapers, music, character models, and voice clips which may be played through the in-game ALTIMIT OS, as well as user icons and mottos for both the story and versus mode. After the game's credits finish, a new .hack OVA is unlocked for viewing.
The Versus Mode supports one-on-one online, one-on-on local play, as well as player vs CPU and CPU vs CPU modes.