Songs by Chapter

Chapters
Story Chapters	1	2	3	4	5	6	7	8	9	10
Side Chapters	0	S	K	R	T	D	L	N	M
Alpha Chapters	Ω					DJMAX

Chapters are groups of songs that can be played and unlocked through purchases. As of Cytus 7.0, there are 10 main chapters, an extra chapter called Cytus Alive that depicts the story of Cytus and four extra chapters, Symphony, Knight, Retro and Prologue.

List of Chapters

Logo	Chapter		Note
	Chapter I	Operators	Added in 2.0 for free, contains 9 songs from 1.0 and 1.2.0. A hidden song and an extra one added in 2.1.0
	Chapter II	Disaster	Added in 2.0 for free, contains 9 songs from 1.0, 1.1.0 and 1.2.0. one hidden song added in 1.1.0 and two more hidden songs added in 2.1.0.
	Chapter III	Cytus	Added in 2.0 for free, contains new 8 songs from 2.0, one song from 1.0 and a hidden song in 2.1.0.
	Chapter IV	The Silence	Added in 3.0 for free.
	Chapter V	Vanessa	Added in 3.0 as IAP. Unlocked for free in 4.0
	Chapter VI	The Lost	Added in 3.0 as IAP. Unlocked for free in 4.5
	Chapter VII	Loom	Added in 4.0 as IAP. Unlocked for free in 5.0, contains two hidden songs
	Chapter VIII	Another Me	Added in 4.0 as IAP. Unlocked for free in 6.0, two hidden songs added in 5.0
	Chapter IX	Buried	Added in 5.0 as IAP. Unlocked for free in 6.1, contains hidden song
	Chapter X	The New World	Added in 5.0 as IAP. Unlocked for free in 7.0 along with Chapter S.
	Chapter 0	Prologue	Added in Lambda as exclusive chapter and 6.1.0, Available as permanent IAP worth $4.99 -- NOT PART OF MILLION DOWNLOAD PLAN
	Chapter S	Symphony	Added in 4.5 as IAP, Unlocked for free in 7.0 along with Chapter 10.
	Chapter K	Knight	Added in 6.0, Available as an IAP worth $4.99
	Chapter R	Retro	Added in 7.0, Available as an IAP worth $4.99
	Cytus Alive	(Hidden album)	Added in 6.0 for free, Available by clicking on Easy or Hard circles in each chapter screen