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This is extremely fun! But reloading the page loses your progress :(.
It doesn't, but the first white horizontal swipe is always needed. Unfortunately there is a "reset" button that, when pressed, resets your progress without confirmation.

I was at 4 fingers :(

You're right! I didn't notice that. Sucks about the reset button :(
"Twister on a touchscreen"
it gets really hard when you need to figure out how to rotate and keep multiple fingers on the screen while sliding
Cheating tip; use two hands, place your finger on both of the sliders, then almost complete the first one, then finish the second one.
Works fine until you get to the crossing patterns. :)
Is there way to solve the puzzles without doing that?!
I don't think so. Some of the 3 or 4 puzzles require rotation and cris crossing
Is that cheating? Seems difficult enough for me, still.
Neat! Once it got to three fingers I got stuck pretty quickly, though.
How far does it go? I hit some really hard ones with 3 fingers. I think my phone gets confused if my fingers are too close to each other, which makes it especially difficult.

This also feels like playing a game of Operation [1]. The author just needs to add an annoying buzzer sound whenever you fail.

[1] https://en.wikipedia.org/wiki/Operation_(game)

I got to four finger ones, but they are bit much to me.

I wonder if there is optimum phone size for this, mine might be smidgen too small

I used an iPhone 12 Pro, and it was pretty hard - couldn't get to 3 fingers because the site froze whenever I accidentally slightly triggered another gesture. Had to do a lot of phone-spinning though, lol. Pretty cool!
I imagine I'm not at much advantage on my 13 mini
My 14 micro is not much of a help aswell.
Blast you for getting me all excited for a phone I’d immediately drop my 7 and run to buy.
It goes up to 4 fingers, and the last one is 3 fingers again but basically impossible without switching fingers. Edit: nvm its possible without cheating
The hardest one for me was the 4 fingered puzzle where you had to move all 4 from one side of the screen to the other in a line, except the lines overlapped with the neighbors multiple times.
tough one, thumb hurts now
Couldn't get it to work on my Pixel 4a, kept asking to use a tablet or a phone... .-.
Multi-touch digitiser acid test. Phone manufacturers take note!
This would be a fun game with some UX improvements. It's extremely frustrating when the reason I can't finish a puzzle is because my finger slipped off the line and not because I just don't know the solution. I stopped playing because of how frustrating that was.
It's a dexterity game. Think of it like Jenga, even if you know which block to pull out, the tower can still fall if you don't do it cleanly.

At least with this you don't need to rebuild the whole tower!

Twister is the metaphor for me. I had to lock my orientation so that I could rotate the phone around to untie some of two and three finger ones.
No, they're not the same. In Jenga you usually lose in a way that you know could have been avoided. "If I had just held my hand still" or whatever. That is not what this is. This game is frustrating because it was poorly designed not because it is "hard".
If only you didn't let your finger slip off the line
Totally agree, the dexterity is what makes it fun. I was thinking about how a larger screen would help, or if I had longer fingers, or if I cut my nails it'd be better. The annoying fails build me toward a sweet victory. good rush.

Also, the cost of failing is not much, quick iterations. You just have to remember what you did.

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Made it to 3 fingers and then couldn't advance as my phone interpreted a 3 finger swipe as a screenshot. I'm counting it as a win since I learned a new feature of my phone!
Had the same problem at first, but moving one finger before the others made it work. At four fingers my phone can't do it anymore. It seems that it can only detect 3 pressure points at a time.
The same, my S23 doesn't recognise 4 touches.
Does it really not? I remember a lot of years back everyone was boasting how they can recognize 10 touches at the same time. Perhaps try an app, to see if the limitation comes from hardware or software?

My Note9 is able to register at least 10 separate touches in Chwazi app (just tested). Seems weird a newer phone in the basically same line would downgrade to three.

> Seems weird a newer phone in the basically same line would downgrade to three.

You have data scientists busy analyzing telemetry all the time. It's conceivable someone figured "the data shows" most people don't even use 3 fingers at a time, much less 5+, so why not simplify the screen driver / hardware to save costs (or trade it for some improvement elsewhere)...

Newer phones are more optimized than older ones. On the market, optimized doesn't mean better.

Found out that if you activate 3-finger touch for screenshot, that disables the phone's ability to register more than 3 touch points. With that disabled I can now play the game again (and after several 4-fingered ones I'm now stuck at a 3-finger one)
It was the last one, and I managed.

Quite fun game!

quit at 2 fingers because, why am i doing this? (i've actually commented before on HN about my dislike of all the sliders in the iOS UI, what an annoyingly difficult specialized skill to have to say up on just to hit what should be very fast and simple radio buttons or checkboxes)
The slider-style switches are dumb eye candy, I agree, but you don’t have to treat them as such, they toggle when tapped.

My big annoyance is how these massive balls of JavaScript and images and crap have infected UIs of web apps everywhere, as though people couldn’t understand a checkbox or something. Silly “UI designer” fad, and quite pathetic for a designer really, to just copy whatever Apple did.

You could probably run a successful "ai design" scam where you ask your mark a bunch of psychographic details about the customer and product, then ask them for their website url.

You discard all the psychographic data and blindly apply let's call "apple-ify.css" where you change the fonts, colors and contrast to just knockoff apple and then charge something like $499 for it with an elaborate pitch using buzzwords about machine learning and big data on how you're doing the latest in analysis driven design with cutting edge AI.

Meanwhile it's just a stupid static css file.

It'd probably work frighteningly well

Seems like this was made by Craig Kaplan (https://cs.uwaterloo.ca/~csk/). Had him for graphics while at school there, and he was a fantastic professor
His work on aperiodic monotiles has been in the news very recently. https://news.ycombinator.com/item?id=36119920
Just the other day he posted about how they were able to modify the one member of the family identified in their paper which is not an aperiodic monotile into one that tiles without reflections.
+1 csk is as good as it gets. Had him for my first CS class there and to the end of my time there, that class stood out both in terms of quality and enjoyment/engagement.

If you're at Waterloo and have the chance to be in Craig's class, jump at it.

That’s fun! This would be a fun speedrun game.

(To watch. Not to try to actually speedrun yourself. That sounds painful, emotionally as well as physically.)

I would have liked a visual indication for exactly where you went off track. With multiple fingers it’s not always obvious.
Doesn't work well on phones though, you really need a tablet. When you get to 4 fingers, it starts randomly losing track of a finger or two when fingers get close to each other. I tried two different Android phones and an iPhone.
or a laptop with touchscreen
I was unable to get past the second 3 finger one. It kept glitching out when I put down my third finger.

Samsung Galaxy S20

Yeah phones are hard mode but still possible. I did it on a 5 inch screen
Won't even let you start on a computer with DevTools and touch emulation.
amazing, the game eventually froze on me tho ;( ios ff
Great job! Fun and innovative!
I think that's the first nontrivial use of multitouch that I have seen in the wild (i.e. that is not basic "pinch to zoom" stuff).

Really cool!

If you like this, there’s a great early iPhone game called Eliss with similar finger twisting multitouch. There’s an Android version now too.
Early iPhone/iPad games were really creative with this before everyone just settled on making candy crush games.
What's annoying and counter to popular convention / user expectations is that you have to keep your finger in the established path to keep grip of the "ball". (S'pecially given your finger often blocks the view of it).
Why is it annoying?

The feedback is immediate and highly discoverable.

The Lock Screen on your phone has totally different criteria (ease, muscle memory) than a toy that uses the same metaphor (fun/challenging)

Also: isn’t it more fun this way??

I actually liked it, but my daughters immediate reaction was “This is so annoying” (but in all caps).

Meanwhile, I find typing anything on my phone very annoying.

That's the whole point of the game, no? It was what I expected. Are some slide to unlock bars "ratchets" that stay where you left them?
I think it is less intuitive to non-iOS users... Android has "swipe up to unlock" and there isn't really a UI element.
Uhm haha. On behalf of our community I would like to say that I was perfectly capable of understanding this mechanism thank you. Pretty sure the reason for the unintuitiveness for some people must rely on something else entirely.
iOS has been "swipe up to unlock" for some time now, as well as Android vendors had "slide to unlock" lockscreens earlier.
Android stock maybe. Android as delivered by various vendors? It depends. I've seen variations of this mechanism pop up - including ones requiring to keep the finger on the path or else you "lose the ball", and that one was in the phone UI, where you needed to swipe to accept or reject a call!
For me it wasn't that the slide doesn't stay in place (that much is expected), but that if you deviate from the path it immediately slips back to the beginning. That's a bit anti-pattern w.r.t. typical slides that either have a forgiveness zone around the element or update to the point on the slide nearest to the gesture point.
Not a ratchet, but an imaginary rubber band.
I'm not sure that the game would work without this restriction. If you kept grip of the ball regardless of if your finger was on the path none of the game's puzzles would work since you could just move your fingers wherever you wanted without losing the ball.
Definitely one of the core challenges of the game, and understandably not to everyone’s taste. I learned that I inadvertently swipe in a slight arc on the first puzzle and enjoyed learning to move precisely.
It's the same as a one of those games with the wire and the buzzer, just with a different interface.
This is pretty fun! It seems the starting position of your fingers is important, as is the ability to rotate the device. Interesting to see how many mobile HN users there are too.
Technically you don't need to rotate the device (I did it with my touchscreen-enabled laptop), but you will have to get out of your chair!
Haha, I guess that works too. Does the screen rotate, or you you?
Not sure why, but I found this gave me a lot of anxiety.

I think maybe the focus and fine motor control needed to keep the ball within the lines…