In Modern Systems

What is with this game? I only know that it's for PS2, was made by the guys behind Ico, and has REALLY unique gameplay (you run up with your horse to giants, jump off and climb up them, transforming them into levels of sorts as you scale them).

Has anyone heard anything? I'd REALLY like to know if it's good. I love genuinely unique games.
(Katamari Damacy)