Kà is the first Cirque du Soleil production that deviates from the company's usual format—the production presents a more straightforward story, unlike the more abstract visuals presented by other Cirque productions.
In its review, the Los Angeles Times stated it "may well be the most lavish production in the history of Western theater. It is surely the most technologically advanced." The New York Times highly praised all the technical aspects and costumes, but felt that it did not succeed in a particularly compelling story, rather it was "essentially about the kind of wild physical feats that all Cirque shows are about, their jaw-dropping effect multiplied by the huge dimensions of the theatrical space." The show has been seen by more than one million spectators since its opening in February 2005.
Kà is a story about "conflict and love", of "imperial twins who are separated at the prime of their youth and must undergo a rite of passage of self-discovery. It is about their encounters with Kà, the fire that has the dual power to destroy or illuminate."
Unlike other Cirque du Soleil performances, Kà offers four pre-shows. Once the house opens, guests are greeted by the villagers of Kà ("Gatekeepers") with different professions such the mayor and his wife, the healer, the gossip, and so on. Twenty minutes before curtain, two musicians enter the lobby and climb up to two stringed instruments specially designed for Kà and integrated into the architecture. Ten minutes before the show, actors appear in the metal framework to the left and right of the stage and perform flips and leaps assisted with ropes to dive into the audience and attempt to scare viewers. Five minutes before showtime, a staged act informs the audience that there is no flash photography or cell phone usage allowed.