<s>
is	O
a	O
2019	O
action	B-Application
role-playing	I-Application
game	I-Application
developed	O
by	O
Nihon	O
Falcom	O
.	O
</s>
<s>
A	O
part	O
of	O
the	O
Ys	O
series	O
,	O
it	O
first	O
released	O
in	O
Japan	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
before	O
it	O
saw	O
a	O
worldwide	O
release	O
by	O
NIS	O
America	O
in	O
February	O
2021	O
.	O
</s>
<s>
The	O
game	O
received	O
additional	O
releases	O
for	O
Windows	O
,	O
Nintendo	B-Application
Switch	I-Application
and	O
Stadia	B-Application
in	O
July	O
2021	O
,	O
and	O
PlayStation	B-Device
5	I-Device
in	O
May	O
2023	O
.	O
</s>
<s>
Ys	B-Application
IX	I-Application
received	O
generally	O
positive	O
reviews	O
from	O
critics	O
.	O
</s>
<s>
Ys	B-Application
IX	I-Application
:	I-Application
Monstrum	I-Application
Nox	I-Application
is	O
an	O
action	B-Application
role-playing	I-Application
game	I-Application
played	O
from	O
a	O
third-person	O
perspective	O
.	O
</s>
<s>
It	O
further	O
builds	O
on	O
the	O
gameplay	O
foundation	O
of	O
Ys	B-Application
VIII	I-Application
:	I-Application
Lacrimosa	I-Application
of	I-Application
Dana	I-Application
,	O
where	O
players	O
control	O
multiple	O
main	O
characters	O
that	O
can	O
be	O
switched	O
between	O
on-the-fly	O
,	O
each	O
with	O
their	O
own	O
play	O
styles	O
and	O
unique	O
skills	O
.	O
</s>
<s>
Boost	O
mode	O
,	O
a	O
returning	O
game	O
mechanic	O
from	O
Ys	O
:	O
The	O
Oath	O
in	O
Felghana	O
and	O
Ys	B-Application
Origin	I-Application
,	O
temporarily	O
increases	O
damage	O
dealt	O
,	O
decreases	O
damage	O
received	O
,	O
and	O
increases	O
attack	O
and	O
movement	O
speeds	O
.	O
</s>
<s>
New	O
to	O
Ys	B-Application
IX	I-Application
,	O
each	O
party	O
member	O
has	O
traversal	O
abilities	O
,	O
called	O
Monstrum	O
Gifts	O
,	O
such	O
as	O
gliding	O
and	O
running	O
up	O
walls	O
.	O
</s>
<s>
Ys	B-Application
IX	I-Application
:	I-Application
Monstrum	I-Application
Nox	I-Application
was	O
initially	O
teased	O
as	O
Project	O
N.O.X	O
before	O
being	O
revealed	O
on	O
December	O
19	O
,	O
2018	O
.	O
</s>
<s>
Nihon	O
Falcom	O
president	O
Toshihiro	O
Kondo	O
stated	O
that	O
he	O
wanted	O
the	O
next	O
Ys	O
game	O
to	O
lean	O
more	O
towards	O
the	O
adventure	O
genre	O
,	O
with	O
Dana	O
's	O
arc	O
in	O
Ys	B-Application
VIII	I-Application
:	I-Application
Lacrimosa	I-Application
of	I-Application
Dana	I-Application
as	O
a	O
hint	O
.	O
</s>
<s>
In	O
another	O
interview	O
,	O
Kondo	O
said	O
that	O
he	O
wanted	O
to	O
take	O
the	O
new	O
axis	O
of	O
direction	O
and	O
movement	O
introduced	O
in	O
Ys	B-Application
VIII	I-Application
:	I-Application
Lacrimosa	I-Application
of	I-Application
Dana	I-Application
to	O
the	O
next	O
level	O
,	O
citing	O
examples	O
such	O
as	O
an	O
air	O
dash	O
or	O
a	O
hook	O
shot	O
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
by	O
Nihon	O
Falcom	O
and	O
released	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
in	O
Japan	O
on	O
September	O
26	O
,	O
2019	O
.	O
</s>
<s>
It	O
was	O
released	O
by	O
NIS	O
America	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
in	O
North	O
America	O
,	O
Europe	O
and	O
Australasia	O
respectively	O
on	O
February	O
2	O
,	O
February	O
5	O
,	O
and	O
February	O
12	O
,	O
2021	O
,	O
with	O
additional	O
releases	O
for	O
Windows	O
,	O
Nintendo	B-Application
Switch	I-Application
,	O
and	O
Stadia	B-Application
in	O
July	O
2021	O
.	O
</s>
<s>
Nippon	O
Ichi	O
Software	O
released	O
the	O
Nintendo	B-Application
Switch	I-Application
version	O
in	O
Japan	O
on	O
September	O
9	O
,	O
2021	O
.	O
</s>
<s>
A	O
PlayStation	B-Device
5	I-Device
version	O
is	O
scheduled	O
for	O
release	O
in	O
North	O
America	O
on	O
May	O
9	O
,	O
in	O
Europe	O
on	O
May	O
12	O
,	O
and	O
in	O
Australasia	O
on	O
May	O
19	O
,	O
2023	O
.	O
</s>
<s>
Ys	B-Application
IX	I-Application
:	I-Application
Monstrum	I-Application
Nox	I-Application
received	O
"	O
generally	O
favorable	O
"	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Japanese	O
magazine	O
Famitsu	O
scored	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
a	O
35	O
out	O
of	O
40	O
.	O
</s>
