Incredible. There is no other way to describe Ka.
This was my first Cirque show.
The stage is huge. It seems to be a small city in front of your eyes. There are tons of balconies that actors swing/yell/shoot/sing from. The seats have speakers in the headrests which gives for awesome acoustics in addition to the live band.
The storyline was a little difficult to follow, but the visuals and the music were more than enough to keep you entertained if you don't get the plot. The stage seems to morph into all kinds of different scenery.
The costumes are amazing. Be sure to get there 20 minutes early as they have pre-show entertainment.
We got these tickets along with our Vegas package. We chose Ka after seeing the reviews on Yelp.