I meant this bundle: https://steamdb.info/bundle/1910/
Time flies, lol...

Those popups are a joke, it's a just a timer printing some random names/amounts from a list.

Debug the page code and you'll find the popups are just cycling through a list of 50 so-called donations:

this.$element.data.charges.forEach(c=>console.log(`Name = "${c.userName}"; Amount = "${c.donation.amount/100} ${c.donation.currency}"; From = "${c.location.city}, ${c.location.countryCode}"`))

Name = "Stephane G."; Amount = "100 USD"; From = "Toronto, CA"
Name = "Sergio V."; Amount = "100 USD"; From = "Madrid, ES"
Name = "Nicolas L."; Amount = "100 USD"; From = "Beloeil, CA"
Name = "Jeffrey J."; Amount = "100 USD"; From = "Denver, US"
Name = "Ryan L."; Amount = "101 USD"; From = "Wayne, US"
Name = "Jules v."; Amount = "100 EUR"; From = "Voerendaal, NL"
Name = "Felix G."; Amount = "100 USD"; From = "Frankfurt am Main, DE"
Name = "Parker R."; Amount = "101 USD"; From = "Hillsboro, US"
Name = "Zachary A."; Amount = "100 USD"; From = "Garner, US"
Name = "Francesc M."; Amount = "100 EUR"; From = "Almacelles, ES"
Name = "Ben S."; Amount = "100 USD"; From = "Huntington Station, US"
Name = "Russell M."; Amount = "100 USD"; From = "Fairmont, US"
Name = "James H."; Amount = "100 USD"; From = "Mauldin, US"
Name = "Daniel J."; Amount = "100 EUR"; From = "Warsaw, PL"
Name = "Allison K."; Amount = "117 USD"; From = "Novi, US"
Name = "Dream PC Pty Ltd"; Amount = "170 AUD"; From = "Adelaide, AU"
Name = "Sheldon F."; Amount = "100 USD"; From = "Vancouver, CA"
Name = "Paweł M."; Amount = "101 USD"; From = "Warsaw, PL"
Name = "Jonathan M."; Amount = "100 USD"; From = "New York, US"
Name = "Travis N."; Amount = "100 AUD"; From = "Perth, AU"
Name = "Jonas L."; Amount = "100 USD"; From = ", SE"
Name = "Kasia B."; Amount = "25 GBP"; From = "Farnham, GB"
Name = "Cameron P."; Amount = "100 USD"; From = "San Jose, US"
Name = "George L."; Amount = "100 USD"; From = "Mililani Town, US"
Name = "Coldblood Inc."; Amount = "150 CAD"; From = "Vancouver, CA"
Name = "Kyle S."; Amount = "250 USD"; From = "Los Angeles, US"
Name = "Yifan M."; Amount = "120 USD"; From = "Mountain View, US"
Name = "Lucas S."; Amount = "102 USD"; From = "Champaign, US"
Name = "Leif D."; Amount = "120 USD"; From = "Winter Garden, US"
Name = "Craig W."; Amount = "120 USD"; From = "Oakland, US"
Name = "Rachel T."; Amount = "250 USD"; From = "Oakland, US"
Name = "Brian B."; Amount = "5 USD"; From = "Toms River, US"
Name = "Justin R."; Amount = "120 USD"; From = "Wauwatosa, US"
Name = "Zachary K."; Amount = "100 USD"; From = "Indianapolis, US"
Name = "Galen R."; Amount = "100 USD"; From = "Vancouver, CA"
Name = "Philip B."; Amount = "50 CAD"; From = "Vancouver, CA"
Name = "Josh H."; Amount = "100 USD"; From = "Prince George, CA"
Name = "James B."; Amount = "250 GBP"; From = "London, GB"
Name = "Joey F."; Amount = "100 USD"; From = "Chattanooga, US"
Name = "Karen M."; Amount = "100 USD"; From = "San Diego, US"
Name = "Josiah K."; Amount = "110 USD"; From = "Dallas, US"
Name = "Jackie K."; Amount = "100 USD"; From = "Bothell, US"
Name = "Mike H."; Amount = "100 EUR"; From = "Athenry, IE"
Name = "Zac L."; Amount = "100 USD"; From = "San Jose, US"
Name = "Arturo V."; Amount = "100 USD"; From = "Kent, US"
Name = "Jordan C."; Amount = "120 USD"; From = "Seattle, US"
Name = "Scott H."; Amount = "100 USD"; From = "Frederic, US"
Name = "Smushies S."; Amount = "100 USD"; From = "Huntsville, US"
Name = "Nathan G."; Amount = "120 USD"; From = "Los Angeles, US"
Name = "Art S."; Amount = "100 USD"; From = "San Francisco, US"

Slightly off-topic, but this dialogue reminds me of this piece of (Steam) news. Apparently, the money was kept by the publisher.

No, Organizations acquire 501(c)(3) tax exemption by filing IRS Form 1023.[13] As of 2006, the form must be accompanied by an $850 filing fee if the yearly gross receipts for the organization are expected to average $10,000 or more.[14][15] If yearly gross receipts are expected to average less than $10,000, the filing fee is reduced to $400.[14][15]

I don't know who used it first. The word "charity" appeared almost 30 times in this discussion when I said that, so I assumed the source was the bundler, as is usually the case.

oh okay, sorry and thanks for the information.
Still a good reason.^^

"The exempt purposes set forth in section 501(c)(3) are charitable, religious, educational, scientific, literary, testing for public safety, fostering national or international amateur sports competition, and preventing cruelty to children or animals. The term charitable is used in its generally accepted legal sense and includes relief of the poor, the distressed, or the underprivileged; advancement of religion; advancement of education or science; erecting or maintaining public buildings, monuments, or works; lessening the burdens of government; lessening neighborhood tensions; eliminating prejudice and discrimination; defending human and civil rights secured by law; and combating community deterioration and juvenile delinquency."
~source

It's a non-profit organizing a fundraiser for themselves to fund their gaming expos. It would be the same if e3 came out and said please give donate money so we can host e3. It's like a charity in the sense that they consider themselves to be the charity.

So we don't call it a charity but that's what it is right? It's a non-profit taking donations for themselves to fund their own events. Falls in the category of a charity imo "an organization set up to provide help and raise money for those in need." I don't know how they qualified to be a 501c3 but there's some requirements for that. Gaming expos aren't listed.

"The exempt purposes set forth in section 501(c)(3) are charitable, religious, educational, scientific, literary, testing for public safety, fostering national or international amateur sports competition, and preventing cruelty to children or animals. The term charitable is used in its generally accepted legal sense and includes relief of the poor, the distressed, or the underprivileged; advancement of religion; advancement of education or science; erecting or maintaining public buildings, monuments, or works; lessening the burdens of government; lessening neighborhood tensions; eliminating prejudice and discrimination; defending human and civil rights secured by law; and combating community deterioration and juvenile delinquency." from the gov.

Edit: it is a charity according to the IRS
link

I was thinking of a Platinum Mega Bundle, Prestige is... well... something else entirely :)