Mode

has several available, which can be chosen from at file creation.

List of Modes
CoH:: ''Play through the story. The intended mode for a first playthrough.''
 * Series:, CoH:, CoH: and CoH: can be unlocked in this mode. Skull Kid can also be unlocked.

CoH:: Play through an alternate story, featuring Octavo.
 * CoH: is the only playable character in this mode, unless co-op is used. Functionally identical to CoH: as Octavo.

CoH:: Play through an alternate story, featuring Skull Kid.
 * Takes place in the Series:'s future. CoH: is the only playable character in this mode, unless co-op is used. Functionally identical to CoH: as Skull Kid.

CoH:: Play the entire game without swapping characters.
 * Can choose any one character to play as. Can choose two if starting in co-op.

CoH:: ''Replace the overworld with a single large dungeon. For players looking for the classic NecroDancer experience.''
 * The dungeon contains 21 floors across 5 zones. Can choose a character the same way as in CoH:. Before each boss, a portal is present, which leads back to the start of the zone.

CoH:: ''Play through the game in Dungeon Mode with all characters consecutively. Not that the save file will be removed upon completion.''
 * Since CoH: and CoH: are so similar to their non-shadow counterparts, you can choose between playing as the shadows or their non-shadow counterparts.
 * You'll also need to play as CoH:.

CoH:: ''Play in Permadeath Mode with a random character on a new world each day. You get only one chance per day!''
 * Only Series:, CoH:, CoH:, CoH: and CoH: can appear in this mode.

CoH:: Play through a puzzle-centric dungeon.
 * This mode is just the CoH: with an additional floor, a boss key to find, and with NaN Piece of Hearts instead of NaN Hearts after clearing an enemy room.

CoH:: ''Play an infinite arena mode, where the enemies get harder and harder. If you're defeated, you'll have to start over!''
 * An endless version of the CoH:. Every six floors, a boss (other than CoH:) will appear.

CoH:: ''Play the game without moving to the beat. Enable this if you often find yourself missing beats.''
 * When on, the game becomes entirely turn-based, and the rhythm aspect is entirely removed. Can be toggled at any time from Options > Gameplay. Not recommended for co-op.

CoH:: Double the speed of the beat.
 * Has very little effect if CoH: is on.

CoH:: ''A more challenging experience. Once you get a game over, the game ends permanently.''
 * Some additional items, like the CoH: and CoH:, are shuffled around like other key items. Enemies and bosses will be harder variations of themselves. For more details, see the main article for CoH:.

CoH:: The identity of all enemies and items is a mystery!
 * The identity of items are revealed when you pick them up.