Where do you get a kingdom hearts computer game?

There isn't one out there yet. :(
You can play only in the following platforms:

*Nintendo DS:
1)358/2 Days

*Playstation 2:
1)Kingdom Hearts 1
2)Re: Chain of Memories
3)Kingdom Hearts 2
4)Kingdom Hearts 1 Final Mix(as of yet, only a Japanese version)
5)Kingdom Hearts 2 Final Mix
6)Kingdom hearts 2 Final Mix+(as of yet, only Jap)

*Mobile Phone:
1)Kingdom hearts Coded(only Jap)

*GameBoy Advance:
1)Chain of Memories

*PSP:
1)Birth By Sleep(only Jap)

u cant not yet but will be

Well probly H.M.V would have the game in computer form!