<s>
Opus	B-Application
:	I-Application
Echo	I-Application
of	I-Application
Starsong	I-Application
(	O
stylized	O
as	O
OPUS	B-Application
:	I-Application
Echo	I-Application
of	I-Application
Starsong	I-Application
)	O
is	O
a	O
text-driven	O
side-scrolling	O
adventure	O
game	O
developed	O
by	O
Taiwanese	O
independent	O
studio	O
SIGONO	O
.	O
</s>
<s>
It	O
is	O
the	O
third	O
installment	O
of	O
the	O
Opus	O
series	O
,	O
after	O
Opus	B-Application
:	I-Application
The	I-Application
Day	I-Application
We	I-Application
Found	I-Application
Earth	I-Application
and	O
Opus	B-Application
:	I-Application
Rocket	I-Application
of	I-Application
Whispers	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
macOS	B-Application
and	O
Windows	B-Application
on	O
September	O
1	O
,	O
2021	O
to	O
strong	O
critical	O
reception	O
.	O
</s>
<s>
An	O
enhanced	O
version	O
with	O
voice	O
acting	O
titled	O
Opus	B-Application
:	I-Application
Echo	I-Application
of	I-Application
Starsong	I-Application
-	O
Full	O
Bloom	O
Edition	O
was	O
released	O
for	O
Nintendo	B-Application
Switch	I-Application
on	O
May	O
11	O
,	O
2022	O
,	O
as	O
an	O
update	O
for	O
macOS	B-Application
and	O
Windows	B-Application
on	O
May	O
19	O
,	O
2022	O
,	O
and	O
for	O
Xbox	B-Device
One	I-Device
and	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
via	O
Xbox	B-Application
Game	I-Application
Pass	I-Application
on	O
August	O
25	O
,	O
2022	O
.	O
</s>
<s>
A	O
mobile	O
version	O
was	O
released	O
for	O
iOS	B-Application
on	O
November	O
17	O
,	O
2022	O
.	O
</s>
<s>
In	O
Opus	B-Application
:	I-Application
Echo	I-Application
of	I-Application
Starsong	I-Application
,	O
the	O
player	O
's	O
main	O
goal	O
is	O
to	O
fly	O
their	O
spaceship	O
across	O
the	O
planetary	O
system	O
Thousand	O
Peaks	O
,	O
and	O
find	O
asteroids	B-Application
known	O
as	O
lumen	O
caves	O
.	O
</s>
<s>
Back	O
then	O
,	O
Thousand	O
Peaks	O
was	O
recovering	O
from	O
the	O
Lumen	O
War	O
,	O
a	O
20	O
year	O
conflict	O
that	O
involved	O
numerous	O
factions	O
from	O
across	O
the	O
galaxy	O
,	O
fighting	O
over	O
a	O
valuable	O
resource	O
known	O
as	O
Lumen	O
,	O
which	O
could	O
be	O
mined	O
from	O
the	O
planetary	O
system	O
's	O
asteroids	B-Application
.	O
</s>
<s>
The	O
game	O
has	O
received	O
"	O
universal	O
acclaim	O
"	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
,	O
with	O
strong	O
praises	O
being	O
given	O
to	O
the	O
game	O
's	O
story	O
.	O
</s>
