Source? I don't think I read about him saying that.
Anyway, if the anniversary game is Touhou 15, that is going to sound like 2 Shanghai Alice games and 1 Tasofro game next year. Well, anything can happen.
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Addenum:
The total number of players is: 101 on the left, 105 on the right (
1,
2)
Different bullets turn into different sizes of coins: ofuda and round bullets into small coins (1 point), oval and large round bullets into medium coins (2 points), and bubbles into huge coins (10 points). Hit Reimu with the mallet, and she will also drop huge coins. The text 大金 "lots of money" is
inscribed on those huge coins.
Youtube
video of the game, recorded from the stream.
Another
video, recorded live.
The title of the stage is:
シーンEX 異次元の金融緩和
Scene EX Financial Easing in Another DimensionYou see, this game is a joke on
today's Abenomics, particularly the very recent push to increase inflation by the central bank. "You've seen our monetary easing. Now what does monetary easing look like in Gensokyo!?"
The danmaku patterns are (please compare with the video):
1. Non-spell 1, 22 seconds
2. Spell card 1, 13 seconds
「反則結界」
"Rule-Breaking Boundary"
Similar to the one from ISC, much faster.
3. Non-spell 2, 19 seconds
4. Spell card 2, 22 seconds
「天国にいちばん近いお賽銭」
"The Donation Closest to Heaven"
"... closest to heaven" is a popular phrase, originating from the travellogue
"The Island Closest to Heaven", about the author's travels to South Pacific islands. In the west, you've seen it referenced in Final Fantasy VIII's two world map regions, Island Closest to Heaven, and Island Closest to Hell.
ZUN and the FF8 developers probably knew this name from the 1984 movie based on the book.
The pattern is based on Wakasagihime's tidal wave card from ISC.
5. Non-spell 3, 19 seconds
6. Spell card 3, 23 seconds
「だんまく長者」
"Danmaku Millionaire"
Seems like the Hax Sign "Burn Everything" you've always wanted.
A good text description of the game is
here. Time info from the video and
here.
Another event
report.