Kingdom Hearts coded is a puzzle game with action elements mixed into the gameplay,[11] which is similar to the action-RPG style of the previous titles in the series. It also features a similar interface with fight, item, and "magic" in the command window.[12][13] There are also minigame and platforming elements.[14] The game features a mix of different graphic styles, with three-dimensional backgrounds and two-dimensional characters.[11] The initial trailer showcased the main character, Sora, in dungeons with floating red and black blocks. Battles feature a "debugging" mode to remove the blocks in order to progress towards enemies.[12][13] Blocks are also used to solve puzzles or reach higher ground.[13]
Kingdom Hearts Re:coded has an added system to incorporate multiplayer experiences called "tag mode".[15] If other Nintendo DS players are nearby, they do not need to be playing the game and they will be registered in the game as "ghosts".[15]