<s>
is	O
a	O
Metroidvania	O
Touhou	B-Application
Project	I-Application
fangame	B-Application
developed	O
in	O
2009	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
A	O
remaster	O
,	O
titled	O
,	O
was	O
announced	O
in	O
2021	O
,	O
and	O
released	O
on	O
July	O
28	O
,	O
2022	O
for	O
Steam	B-Application
and	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
Koumajou	B-Application
Densetsu	I-Application
:	I-Application
Scarlet	I-Application
Symphony	I-Application
is	O
a	O
Metroidvania	O
,	O
taking	O
heavy	O
influence	O
from	O
Castlevania	B-Application
:	I-Application
Symphony	I-Application
of	I-Application
the	I-Application
Night	I-Application
.	O
</s>
<s>
The	O
player	O
controls	O
Reimu	O
Hakurei	O
,	O
the	O
miko	O
of	O
the	O
Hakurei	B-Application
Shrine	I-Application
,	O
as	O
she	O
navigates	O
the	O
Scarlet	O
Devil	O
Mansion	O
via	O
platforming	O
sections	O
and	O
killing	O
enemies	O
and	O
bosses	O
,	O
which	O
allows	O
Reimu	O
to	O
level	O
up	O
and	O
upgrade	O
her	O
abilities	O
.	O
</s>
<s>
In	O
Koumajou	B-Application
Densetsu	I-Application
:	I-Application
Scarlet	I-Application
Symphony	I-Application
,	O
Reimu	O
Hakurei	O
enters	O
the	O
Scarlet	O
Devil	O
Mansion	O
to	O
stop	O
Remilia	O
Scarlet	O
,	O
who	O
has	O
released	B-Application
red	I-Application
mist	I-Application
across	O
Gensokyo	O
.	O
</s>
<s>
Koumajou	B-Application
Densetsu	I-Application
:	I-Application
Scarlet	I-Application
Symphony	I-Application
was	O
released	O
in	O
August	O
2009	O
by	O
dojin	O
developer	O
Frontier	O
Aja	O
at	O
that	O
year	O
's	O
Comiket	O
.	O
</s>
<s>
A	O
remaster	O
by	O
the	O
original	O
developers	O
was	O
announced	O
in	O
2021	O
for	O
Steam	B-Application
and	O
Nintendo	B-Application
Switch	I-Application
,	O
which	O
was	O
originally	O
intended	O
to	O
release	O
the	O
same	O
year	O
,	O
but	O
was	O
later	O
delayed	O
to	O
July	O
28	O
,	O
2022	O
.	O
</s>
<s>
Koumajou	O
Densetsu	O
II	O
's	O
gameplay	O
is	O
more	O
characteristic	O
of	O
the	O
earlier	O
Castlevania	O
games	O
,	O
such	O
as	O
Super	B-Application
Castlevania	I-Application
IV	I-Application
and	O
Castlevania	B-Application
:	I-Application
Rondo	I-Application
of	I-Application
Blood	I-Application
.	O
</s>
