I see it rarely, but almost exclusively in games that feature exponential growth, like mobile idle games. Growth is so explosive that you typically entirely ignore the actual numbers, and you measure progress via orders of magnitude (i.e. my currency/second in the game is 5.6*10^47, I'd just call it 47).
The repeating k scale is better than m, b, t, etc because it still preserves a sense of scale. 2m does not look 1/1000000th the size of 2t. 2kk does look a lot smaller than 2kkkk. You can also still easily convert to real number by substituting each k with 3 0s.
And lastly, I don't know the letters going all the way up to 10^47th. That's nearly enough to wrap the alphabet twice, and it's not even that high for that style of game.
The scale is fine, it's just the letter that's unfortunate. M is the Roman Numeral for 1,000; they could just use that. The worst thing I can associate with any number of M's is someone enjoying their food entirely too much once you hit like 7 of them.
At least k stands for kilo, well known prefix for 1000 in sane systems. m or M also works for both million and mega. Albeit not perfect. After that everything breaks down...
We really should use more of SI units like Mg and Gg... Even Tg...
> afaik it's pretty common within gaming communities
Ah okay.
> Oh, I just realized that somebody may think about other kkk...
Well more just because (I thought) it is unusual it'd be hard to understand in a context where you hadn't made it obvious. Maybe I'm just out of touch!
ok, just kidding, now serious take:
US population: 330kk
Rest of the World: 8kkk
Delta (8kkk-330kk)
Even if we assume that distribution of highly skilled people is not uniform (lack of decent higher edu places, harder access to computers/internet)
then you still lose shitton of outliers
edit.
ops I misread.