Yes it has. Actually, all 3 games are out right now.
PS2: Kingdom Hearts and Kingdom Hearts 2
Gameboy Advance: Kingdom Hearts Chain of Memories.
I even heard of a rumor that they're putting Kingdom Hearts Chain of memories on PS2. That outta be awesome.
vvv credit to .Impact.
Bow down to the King of Games!!! I have a NEW RP! Join the RP Ragnorak: "The Seven Spirits of Vladimar!" We need more RPers to help out.