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Nape Pro for Rhythm Games: beatoraja Scratch & In Falsus

Nape Pro for Rhythm Games: beatoraja Scratch & In Falsus

Translated from Japanese with the author's permission. This is a community setup, not an officially supported feature.

Author: Decuplequart

2026.09.27 

Original: note

 

 

So here we have a Nape Pro.
Now, a question for everyone who has one: 
How do you use it?
If you look at Keychron's official page and so on, 
  1. Place it in front of the keyboard and type without leaving the home position 
  2. Use it as a left-hand device 
  3. Use it as a macro pad
  4. Use it as a pointer device
  5. Use it like a remote control
Well, these seem to be the intended uses, more or less. Basically for work.

How to Use Nape Pro as a BMS Turntable (beatoraja) 

And so the author, a weak rhythm-game player, starts thinking: 
Huh? Could this thing be used for rhythm games?
That's the idea.

BMS players wonder: could it work as a turntable?

Right, BMS has been around for ages.
And it has a feature that lets you use the mouse as a turntable.

To explain briefly for those who haven't played BMS or IIDX: these games have 7 key lanes plus 1 scratch (what Japanese players call sara, literally "the plate"), and you hit them in time with falling notes to aim for a high score.
Whoever first called the scratch “the plate” had quite an imagination…
beatoraja gameplay using Nape Pro as the scratch
It's a game like this 
↓ If you've never played, just download this and give it a try! It's fun.
↗BMS Starter Pack 2022 | How to Play & Download
Free, great songs you can play right away. That is what this wonderful BMS package offers.

BMS is a PC game, so you assign keys on your own keyboard to each lane and play. 
There are also dedicated controllers shared by BMS and IIDX (nicknamed "niji-con"), but the good ones are pricey, so let's just ignore them.
But playing on just a keyboard feels a bit lacking. The turntable is supposed to be spun, yet you end up pitifully mashing it with your ring finger, right?
The savior for keyboard players who wish they had a niji-con is the "mouse turntable" feature, which lets mouse movement act as the scratch.

How do you set it up?

Honestly, it feels like a novelty feature, so almost nobody uses the mouse turntable seriously, and there's very little information out there.
Some of you may have looked it up and still been confused.
So below I'll write down the values that should just work for now.
Note: my Nape Pro DPI is set to 400 (the lowest), so if you use a higher DPI, either match mine or adjust the values as needed.

Step 1: In the settings screen's Input tab, check the mouse-turntable box and set the mouse-turntable distance to 120

Launch with this setting and you'll be able to configure the mouse in the key config screen.
beatoraja Input tab with mouse scratch enabled and distance set to 120

Step 2: In the key config screen, assign mouse input to the scratch 

From the song select screen, press 6 to get to this screen.
Use the arrow keys to move to the key you want, press Enter, then move the mouse up/down/left/right to assign it.
With this setup, carelessly moving the cursor on the song select screen gets crazy noisy, so pick songs with the arrow keys.
beatoraja key config with mouse assigned to scratch

Step 3: Get into the rhythm and spin the turntable

Not that kind of plate spinning, though.
Playing a 7-key chart with Nape Pro scratch
Let's scratch! 
There's nothing more to explain. Go spin the turntable on whatever charts you like!

How to Use Nape Pro for In Falsus 

If anything, this is what I actually wanted to do with the Nape Pro, but I'll write it down as a side note.

BMS players wonder: could it be used for field input too?

Do you know a rhythm game called In Falsus?
It's made by lowiro, the same developer as Arcaea, and it's a recently released rhythm game with a fresh feel, played with keyboard and mouse.
↓ You play it by operating it like in this image… 
In Falsus official hand position guide
Apparently this is how the devs want you to play.
Your left hand moves between all 6 keys, including left Shift and Space, depending on the situation, while your right hand controls the mouse.
Wait?! That's a pretty high skill floor.

Move your fingers depending on the situation? Like anyone can do that… 
Playing with a regular mouse, there is technically a way to keep each finger parked on its own key, but it's a path of suffering.
Pressing Space with the base of the pinky on a regular keyboard
Like in the image above, you keep a finger on each of the 6 keys, pressing Space with the base of your pinky. Which is impossible.
It's just too painful on the pinky and ring finger.
And that's where the Nape Pro comes in.

Crank up the in-game mouse sensitivity so your wrist alone gives enough movement

Your hands end up looking like this.
Nape Pro placed for wrist control in In Falsus
Basically, change where you put the Nape Pro compared to before.
Then set In Falsus's mouse sensitivity to around 3–4.5.
In Falsus key binding and mouse sensitivity settings
Doing this magically turns it into a game that feels like a weakened beatmania IIDX: a normal 6-key rhythm game with added wrist action.
In Falsus gameplay with Nape Pro
Believe it or not, most charts become easier. A helping hand for players who struggle with movement.
It won't let you breeze through the game, though.
Here's the gameplay video



That's all from the Nape Pro Rhythm Game Utilization Department. 
See you next time. 

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