Shadowrun & Rifts were much worse.

It’s just a bad execution of a flawed concept

With all the engineering that went into this I’d just prefer a random number generator controlling the faces rather than trying to manually stop that D20 face and the arguments that would happen when the arrow is at the 20-1 boundary.

Not to mention someone with good reflexes and good eyesight (or even a little bit of practice) could just look at the dice and stop it wherever they want.

As far as a true random number generator, you'd get a lot of people preferring dice, or non transitive dice, but for true randomness you'd have to do what other big online gaming companies or CDN does and either watch actual dice being rolled somewhere or use lava lamps for randomness generation.

I would imagine the GM would tell the player to close their eyes with a finger poised just above the spinner while another player gives it a spin and lets the first player decide when to drop their finger.

In the rare event the player manages to stop the spinner while the pointer is exactly on one of those thin little lines, it would be treated as the die rolling off the table or coming to rest on top of or against something while standing on an edge.

I haven't played a TTRPG with a group in years, but making space to roll dice always seemed to be a problem. Even dice towers would take up way more space than this. There were a lot of times I would have found this little gadget handy.

There are plenty of dice-rolling apps for smartphones, but most TTRPG players prefer physical objects. That's why we buy so many dice sets. They're like precious gems. that's why I think people will buy these just to have them even if they don't end up using them that often.

If you get into an argument of practicality as it pertains to TTRPG, you could make the argument that it could all be done digitally with a tablet or other screen instead of physical maps, dice & miniatures, but that's not the experience most players want.

One roll of a d20 is the most common roll to determine the success or failure of an action. Rolling multiple dice at once usually determines the amount of damage inflicted. That part could get awkward, but I can still see TTRPG fans wanting one of these.

I know I do, even though I haven't played in ages. I have a d100 even though I never had cause to use it and likely never will. I'd also like to get some Flipdice, at least a d20 one.

The only thing nerds love more than engineering is over-engineering.