WHEN ?

http://www.syldra.net/lair/ff5cg/k2.jpg
Okay I just wanted to know when I get to play Krile?
I'm just about to enter the "quicksand desert" in the first world.

Krile doesn't become a playable character until the end of the second world, in Moore Forest. She joins your party after (SPOILER)Galuf dies.

she joins your party after *SPOILER STARTS*














Galuf dies









SPOILER END

It's far better to wait for these things to happen, rather than having the plot spoiled in advance;)