Scan Line BPM refers to the speed of the scan line moving up and down the screen. The standard Scan Line BPM is set to 120, where the scan line touches the bottom of the screen 1 second after reaching the top of the screen.
In Cytus, unlike the BPM of the song, the Scan Line BPM of a song is unchanged throughout the whole song. However, the Scan Line BPM of the same song could be different in easy and hard difficulties.
Here is a list of relationships between the Scan Line BPM and the actual BPM of the song
|Scan Line BPM = Actual BPM|
|This is the most common relationship. These songs have a Scan Line BPM equal to its actual BPM. Examples are Future World and L. In total, 145 songs have this relation.|
|Scan Line BPM = 1/2 of Actual BPM|
|Some songs have a slower scan line BPM. It is often quite tricky to get a high TP on these songs as packed notes are commonly found in them. Examples are Area184 and Megaera. Some songs have their scan line using half of the BPM on Easy while the Hard difficulty remains with its original BPM. Examples are D R G and Let's Go On An Adventure. 8 songs have this relation on both difficulties, with 24 songs having this relation on only one difficulty.|
|Scan Line BPM = Double of Actual BPM|
|There are currently only 5 songs with a scan line BPM equal to two times the actual BPM. Note that all of them either have a speedy scan line, or a very slow original BPM.|
|Scan Line BPM = 2/3 of Actual BPM|
|This relationship is only (and commonly) found in songs with a triple beat (3/4 or 3/8). Examples are Brionac and Vivere La Vita.|
|Scan Line BPM = 4/5 of Actual BPM|
|Currently there are only two songs that has its Scan Line BPM equal to 4/5 of its Actual BPM, which are Fight With Your Devil and Recollections. It is due to the song's quintuple beat (5/4).|
|Scan Line BPM having no relationship with the Actual BPM|
There could be two reasons leading to this situation:
Songs with this relation fit with the total 24 songs that have uneven or unrelated scan BPMs.
In Cytus IIEdit
With the release of Cytus II and the introduction of the Chaos difficulty, the scan line can now speed up and slow down. Right before the speed changes, the scan line will turn red (if it speeds up) or blue (if it slows down) and the words "Speed Up" or "Speed Down" will appear at the bottom of the screen.
Here is a list of possible Scan Line BPM relationships.
|Scan Line BPM does not change|
|13 songs do not change their scan line's BPM at all, making them more akin to original Cytus charts. Examples include Gravity and Alterna Pt.1 -Cosmogony-.|
|Scan Line BPM slows down to 1/2x of Actual BPM|
This is by far the most common change that will happen, as it appears in 109 songs. This is usually used during the calmer sections of the music (however that does not mean the section is always easier, like in CHAOS) Other examples include IOLITE-SUNSTONE and Nostalgia Sonatina.
|Scan Line BPM slows down to 1/4x of Actual BPM|
In 21 songs, the scan line can further slow down to 1/4 of the song's BPM. Except for Return, all of the songs that do this also have the scan line at 1/2 the original BPM. This usually results in notes being extremely close together, making it especially hard to be accurate. Examples include Fireflies (Funk Fiction remix) and Blow my mind.
|Scan Line BPM speeds up to 2x of Actual BPM|
|With this relationship, the scan line is going double the original tempo and is usually used to ramp up the intensity of a song. The rhythms here are very spread apart as notes are hard to aim with the scan line being so fast. This relationship is found in 29 songs, most notably Keep it up, Devilic Sphere, Luolimasi and EMber.|
|Scan Line BPM speeds up to 4x of Actual BPM|
Of these songs with double BPM scan lines, 9 songs feature a scan line with quadruple BPM: Chrome VOX, Grimoire of Crimson, Baptism of Fire (CliqTrack remix), Celestial Sounds (KIVΛ Remix), Brain Power, Phantom Razor, Praystation (HiTECH NINJA Remix), Perspectives, and Bastard of Hardcore. In almost all of these cases, the player is in the middle of hold notes and the speed is simply for visual effect. This is because playing any normal rhythms at these speeds would require near inhuman levels of aim and reaction time.
|Scan Line BPM changes to speed with some other relationship with the Actual BPM|
There are several reasons for this type of relationship:
They are also the only case where the scan line speed changes on Easy or Hard. Usually, this is done with as little change as possible. Note: Ivy's Hard charts can actually change BPM despite being 1/2 of the new BPM.
In total, 16 songs currently change to an odd BPM.
|One way Scan Line|
it just teleport back to the start like in gravity (GLITCH)
For a complete list of the Scan Line BPM of all songs in all difficulties, see Songs by BPM.