Singularity

*This song's Beyond chart is currently exclusive to the mobile version of Arcaea.*

* Default
* Beyond

## Binary EnfoldSingularityETIA.

Singularity - ETIA.
Pack (Mobile): Binary Enfold
Pack (Switch): Binary Enfold

## Unlock Requirements

### World Mode

**Mobile:** None**Switch:** Chapter 3 (3-2)

### Past

**Mobile:** None**Switch:** 25 Fragments
Play Memory Forest [PST]

### Present

**Mobile:** 80 Fragments**Switch:** 50 Fragments
Play Memory Forest [PRS]

### Future

**Mobile:** 180 Fragmentss
Clear Memory Forest [FTR] with Grade A or higher**Switch:** 75 Fragments
Clear Memory Forest [FTR] with Grade AA or above

## Binary EnfoldSingularity VVVIPArcaea Sound Team against. ETIA.

Singularity VVVIP - Arcaea Sound Team against. ETIA.
Pack (Mobile): Binary Enfold
Pack (Switch): Binary Enfold

## Challenge

**Trigger Time: 1:06**

**Unlocks: **Mobile:** Map 2-3 **Switch:** Map 3-3**

The challenge will trigger only if the following requirements are fulfilled:

1. The selected Partner is Eto (before first clear or after unlocking Testify) or Luna (after first clear).
2. Eto is Level 6 or higher, or Luna is Level 10 or higher.
3. (Eto only) Singularity is played on a difficulty corresponding to the player's Potential:
	* < 5: Any difficulty chart
	* ≥ 5 and < 10: Present or Future chart only
	* ≥ 10: Future chart only

Upon meeting the above requirements, the challenge automatically begins at the trigger time. When it triggers, the floor track becomes invisible, and Luna appears, mouthing the vocal sample "If you can". Before the next notes start appearing, a black overlay appears over the track area. From this point until 1:28:

* If the LOST count between this point and 1:28 exceeds a certain number (see table below), Luna immediately disappears and the challenge ends. The song will then continue as normal.
* If the LOST count is kept under this limit:
	+ At 1:28, the track appearance will revert to normal, but Luna will remain in the background.
	+ Clearing the challenge for the first time and playing the song to completion (with Track Complete/Lost) will unlock **Mobile:** Map 2-3 **Switch:** Map 3-3.
	+ For subsequent clears, there is no special reward.

The allowable LOST Note count depends on Eto/Luna's level. Current known values, according to information from the Japanese Wiki and the official Discord server, along with research from the wiki team:

 Allowable LOST Notes

## Trivia

* The artwork of Singularity and Memory Forest form a complete picture when combined.
* Originally, Memory Forest was planned to be the only song ETIA. contributed, but ETIA. was concerned that it was a bit too subdued, and composed Singularity. The Arcaea team liked it and ended up using them both.
* The chart designer 東星 is an alias of Toaster, where コラプサー translates to "collapsar", a star that has collapsed under its own gravity.
* An April Fools' version of this song, Singularity VVVIP, was released on April 1st 2020.
	+ Singularity VVVIP was given a new proper chart in the 5th anniversary update (v3.12), officially released as a permanent unlockable Beyond difficulty for Singularity.
* Singularity was added to Groove Coaster 4 Starlight Road and O.N.G.E.K.I. R.E.D. as part of their respective collaborations with Arcaea.
	+ Singularity in Groove Coaster is titled **"Singularity -Binary Enfold-"** in reference to the pack it is found in. This is due to Groove Coaster already having another song with the same title.
	+ The background animation in Groove Coaster references parts of the chart, including Luna's challenge.
* The challenge in Singularity is officially not an Anomaly.
* This is the first song in which the Future difficulty level is higher than the Beyond difficulty level.
	+ Despite this, its Beyond note count is greater than its Future note count.
* Prior to version 3.12.3, the challenge could also be triggered on the Beyond difficulty, despite it being a different song. This was patched out in version 3.12.3.

## References

1. ↑ https://soundcloud.com/3t1a/singularity
3. ↑ https://twitter.com/3t1a/status/978612803119403009
4. ↑ Official Tweet
5. ↑ Comparison video: https://www.youtube.com/watch?v=1Qyve8abmKc
6. ↑ https://cdn.discordapp.com/attachments/537272590121566247/556271971524935691/unknown.png
7. ↑ [1]