<s>
is	O
a	O
2019	O
Japanese	O
arcade	B-Application
rhythm	O
game	O
developed	O
and	O
published	O
by	O
Marvelous	O
in	O
collaboration	O
with	O
indie	O
record	O
label	O
.	O
</s>
<s>
The	O
game	O
's	O
arcade	B-Application
cabinet	O
features	O
a	O
circular	O
display	O
screen	O
enveloped	O
by	O
a	O
circular	O
touch	O
panel	O
on	O
the	O
outside	O
;	O
the	O
player	O
taps	O
on	O
the	O
corresponding	O
section	O
of	O
the	O
touch	O
panel	O
as	O
music	O
notes	O
approach	O
the	O
border	O
of	O
the	O
circular	O
screen	O
,	O
with	O
the	O
timing	O
of	O
the	O
touch	O
action	O
resulting	O
in	O
a	O
note	O
judgement	O
that	O
contributes	O
to	O
the	O
player	O
's	O
final	O
score	O
.	O
</s>
<s>
Player	O
progression	O
data	O
is	O
saved	O
using	O
Sega	B-Application
's	O
ALL.Net	B-Application
online	O
service	O
,	O
with	O
support	O
for	O
Sega	B-Application
Aime	O
and	O
Bandai	O
Namco	O
Banapassport	O
IC	O
cards	O
.	O
</s>
<s>
Development	O
for	O
Wacca	B-Application
commenced	O
in	O
2017	O
,	O
and	O
the	O
decision	O
to	O
collaborate	O
with	O
HARDCORE	O
Japan	O
's	O
largest	O
record	O
label	O
focused	O
on	O
hardcore	O
techno	O
music	O
—	O
was	O
made	O
during	O
the	O
early	O
stages	O
of	O
development	O
,	O
as	O
the	O
game	O
's	O
producer	O
,	O
Tatsuya	O
Yokoyama	O
,	O
was	O
a	O
fan	O
of	O
their	O
work	O
.	O
</s>
<s>
Marvelous	O
,	O
having	O
prior	O
worked	O
in	O
developing	O
games	O
from	O
various	O
other	O
genres	O
,	O
developed	O
Wacca	B-Application
as	O
their	O
first	O
music	O
rhythm	O
game	O
,	O
and	O
during	O
the	O
game	O
's	O
opening	O
event	O
on	O
October	O
19	O
,	O
2018	O
,	O
Yokoyama	O
stated	O
that	O
the	O
primary	O
reason	O
for	O
deciding	O
on	O
a	O
rhythm	O
game	O
as	O
their	O
next	O
title	O
was	O
due	O
to	O
his	O
personal	O
enjoyment	O
of	O
such	O
games	O
.	O
</s>
<s>
During	O
the	O
early	O
stages	O
of	O
development	O
,	O
20	O
different	O
prototypes	O
of	O
the	O
arcade	B-Application
cabinet	O
were	O
drafted	O
,	O
with	O
various	O
discarded	O
proposals	O
including	O
DJ	O
desk	O
motifs	O
as	O
part	O
of	O
the	O
control	O
scheme	O
;	O
once	O
the	O
final	O
design	O
was	O
solidified	O
,	O
the	O
game	O
was	O
developed	O
under	O
the	O
tentative	O
title	O
.	O
</s>
<s>
The	O
final	O
title	O
of	O
"	O
WACCA	B-Application
"	O
was	O
selected	O
due	O
to	O
the	O
perceived	O
sense	O
of	O
disharmony	O
of	O
how	O
the	O
name	O
sounds	O
,	O
and	O
that	O
it	O
would	O
be	O
able	O
to	O
differentiate	O
the	O
game	O
from	O
other	O
rhythm	O
game	O
titles	O
by	O
intentionally	O
omitting	O
music-related	O
tropes	O
.	O
</s>
<s>
While	O
it	O
is	O
commonplace	O
in	O
other	O
rhythm	O
games	O
to	O
adjust	O
gameplay	O
difficulty	O
according	O
to	O
the	O
tempo	O
of	O
the	O
music	O
,	O
Wacca	B-Application
utilises	O
the	O
360	O
degree	O
touch	O
panel	O
to	O
make	O
difficulty	O
adjustments	O
using	O
elements	O
unrelated	O
to	O
the	O
tempo	O
,	O
such	O
as	O
hand	O
positioning	O
.	O
</s>
<s>
The	O
game	O
features	O
collaboration	O
songs	O
from	O
franchises	O
such	O
as	O
Touhou	B-Application
Project	I-Application
and	O
Senran	B-Application
Kagura	I-Application
as	O
part	O
of	O
its	O
music	O
repertoire	O
.	O
</s>
<s>
Wacca	B-Application
commenced	O
service	O
on	O
July	O
18	O
,	O
2019	O
.	O
</s>
<s>
The	O
first	O
major	O
update	O
to	O
the	O
game	O
,	O
titled	O
Wacca	B-Application
S	O
,	O
was	O
released	O
on	O
January	O
23	O
,	O
2020	O
,	O
adding	O
BPM	O
notation	O
,	O
synchronising	O
the	O
start	O
time	O
of	O
music	O
during	O
multiplayer	O
play	O
,	O
and	O
adding	O
new	O
game	O
modes	O
.	O
</s>
<s>
Wacca	B-Application
Lily	O
,	O
released	O
on	O
September	O
7	O
,	O
2020	O
,	O
added	O
song	O
rating	O
and	O
continue	O
features	O
,	O
while	O
Wacca	B-Application
Lily	O
R	O
,	O
released	O
on	O
March	O
11	O
,	O
2021	O
,	O
added	O
various	O
social	O
interaction	O
features	O
.	O
</s>
<s>
The	O
final	O
update	O
,	O
Wacca	B-Application
Reverse	O
,	O
released	O
on	O
August	O
10	O
,	O
2021	O
,	O
added	O
a	O
bingo	O
feature	O
which	O
offered	O
rewards	O
upon	O
clearing	O
missions	O
,	O
along	O
with	O
additional	O
game	O
modes	O
.	O
</s>
<s>
Location	O
testing	O
for	O
Wacca	B-Application
first	O
took	O
place	O
between	O
October	O
19	O
,	O
2018	O
and	O
November	O
4	O
,	O
2018	O
at	O
four	O
stores	O
across	O
Japan	O
,	O
including	O
Sega	B-Application
Akihabara	O
Building	O
No	O
.	O
</s>
<s>
The	O
online	O
service	O
for	O
Wacca	B-Application
entered	O
end-of-life	O
on	O
August	O
31	O
,	O
2022	O
,	O
with	O
all	O
arcade	B-Application
cabinets	O
subsequently	O
placed	O
in	O
offline	O
mode	O
.	O
</s>
<s>
On	O
July	O
18	O
,	O
2022	O
,	O
Marvelous	O
released	O
a	O
three	O
CD	O
soundtrack	O
titled	O
Wacca	B-Application
Complete	O
Album	O
,	O
featuring	O
all	O
original	O
tracks	O
written	O
for	O
the	O
game	O
.	O
</s>
<s>
The	O
main	O
theme	O
song	O
for	O
Wacca	B-Application
is	O
"	O
Let	O
you	O
DIVE	O
!	O
"	O
</s>
<s>
by	O
HARDCORE	O
TANO*C	O
All	O
Stars	O
with	O
vocals	O
performed	O
by	O
Saori	O
Ōnishi	O
,	O
while	O
the	O
theme	O
song	O
for	O
Wacca	B-Application
Lily	O
is	O
"	O
with	O
U	O
"	O
by	O
and	O
with	O
vocals	O
by	O
Shiki	O
Aoki	O
,	O
and	O
the	O
theme	O
song	O
for	O
Wacca	B-Application
Reverse	O
is	O
"	O
Ouvertüre	O
"	O
by	O
and	O
with	O
vocals	O
from	O
Maki	O
Kawase	O
.	O
</s>
