Square Enix posted a video of Kingdom Hearts Re:coded’s battle system and this Nintendo DS game uses something similar to the deck system introduced in Kingdom Hearts: Birth by Sleep.
A new meter next to Sora’s face appears to grant bonuses. At level 1, Sora has attacks like “land crash” and “slide dash”. After pummeling some Shadow heartless the meter changes to level 2 and Medic (in Japanese) pops up above the menu. When Sora reaches level 3 the words Spirit Attack pop up and finally when the meter is maxed out it says Attack Boost.
Kingdom Hearts Re:coded is scheduled to come out in Japan this fall.