<s>
is	O
an	O
action	B-Application
role-playing	I-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Level-5	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
As	O
indicated	O
by	O
the	O
name	O
,	O
it	O
is	O
the	O
fourth	O
game	O
of	O
the	O
main	O
series	O
of	O
Yo-kai	B-Application
Watch	I-Application
video	O
games	O
;	O
unlike	O
the	O
preceding	O
Yo-kai	B-Application
Watch	I-Application
3	I-Application
,	O
4	O
was	O
initially	O
released	O
only	O
as	O
a	O
single	O
version	O
in	O
Japan	O
in	O
June	O
2019	O
.	O
</s>
<s>
An	O
enhanced	O
version	O
titled	O
Yo-kai	B-Application
Watch	I-Application
4++	I-Application
was	O
released	O
for	O
the	O
Switch	O
and	O
PlayStation	B-Operating_System
4	I-Operating_System
in	O
Japan	O
in	O
December	O
2019	O
.	O
</s>
<s>
Its	O
full	O
name	O
is	O
"	O
Yo-kai	B-Application
Watch	I-Application
4	I-Application
:	O
We	O
're	O
Looking	O
Up	O
At	O
The	O
Same	O
Sky	O
"	O
,	O
translated	O
from	O
"	O
妖怪ウォッチ4	O
:	O
ぼくらは同じ空を見上げている	O
"	O
.	O
</s>
<s>
As	O
with	O
the	O
other	O
games	O
in	O
the	O
series	O
,	O
the	O
protagonist	O
possesses	O
the	O
eponymous	O
Yo-kai	B-Application
Watch	I-Application
,	O
a	O
device	O
that	O
allows	O
them	O
to	O
see	O
,	O
befriend	O
,	O
and	O
summon	O
creatures	O
called	O
Yo-kai	O
.	O
</s>
<s>
Yo-kai	B-Application
Watch	I-Application
4	I-Application
is	O
set	O
in	O
three	O
distinct	O
time	O
periods	O
.	O
</s>
<s>
Another	O
time	O
period	O
is	O
set	O
30	O
years	O
after	O
the	O
other	O
main	O
series	O
games	O
,	O
using	O
playable	O
characters	O
that	O
were	O
introduced	O
in	O
the	O
Yo-kai	B-Application
Watch	I-Application
Shadowside	O
:	O
Oni-ō	O
no	O
Fukkatsu	O
film	O
,	O
including	O
Natsume	O
Amano	O
,	O
the	O
daughter	O
of	O
Nate	O
and	O
Katie	O
.	O
</s>
<s>
The	O
final	O
time	O
period	O
is	O
set	O
in	O
the	O
1960s	O
,	O
approximately	O
30	O
years	O
prior	O
to	O
the	O
other	O
games	O
,	O
with	O
characters	O
from	O
the	O
Yo-kai	B-Application
Watch	I-Application
:	O
Forever	O
Friends	O
movie	O
,	O
including	O
Shin	O
Shimomachi	O
.	O
</s>
<s>
Yo-kai	B-Application
Watch	I-Application
4	I-Application
introduced	O
a	O
new	O
free-roaming	O
3D	O
overworld	O
movement	O
system	O
that	O
is	O
more	O
akin	O
to	O
standard	O
3D	O
RPG	O
games	O
,	O
unlike	O
the	O
previous	O
games	O
that	O
were	O
from	O
a	O
top-down	O
perspective	O
.	O
</s>
<s>
The	O
game	O
also	O
implemented	O
a	O
new	O
battle	O
system	O
where	O
similar	O
to	O
other	O
action	B-Application
role-playing	I-Application
games	I-Application
,	O
players	O
can	O
directly	O
control	O
playable	O
characters	O
to	O
battle	O
enemies	O
unlike	O
where	O
the	O
previous	O
games	O
sent	O
only	O
befriended	O
Yo-kai	O
into	O
battle	O
.	O
</s>
<s>
Yo-kai	O
characters	O
in	O
the	O
party	O
that	O
are	O
not	O
controlled	O
by	O
the	O
player	O
will	O
behave	O
differently	O
in	O
battle	O
depending	O
on	O
their	O
personality	O
,	O
a	O
system	O
similar	O
to	O
previous	O
Yo-kai	B-Application
Watch	I-Application
games	O
.	O
</s>
<s>
Four	O
characters	O
from	O
the	O
Yo-kai	B-Application
Watch	I-Application
Shadowside	O
anime	O
also	O
appear	O
in	O
the	O
game	O
:	O
Natsume	O
Amano	O
,	O
her	O
brother	O
Keisuke	O
Amano	O
,	O
Akinori	O
Arihoshi	O
,	O
and	O
Touma	O
Tsukinami	O
.	O
</s>
<s>
Compared	O
to	O
the	O
prior	O
games	O
in	O
the	O
series	O
,	O
which	O
were	O
all	O
released	O
for	O
Nintendo	B-Operating_System
3DS	I-Operating_System
,	O
Yo-kai	B-Application
Watch	I-Application
4	I-Application
uses	O
3D	O
rendering	O
for	O
both	O
overworld	O
exploration	O
in	O
Sakura	O
New	O
Town	O
and	O
battle	O
scenes	O
.	O
</s>
<s>
Level-5	O
announced	O
in	O
April	O
2018	O
that	O
Yo-kai	B-Application
Watch	I-Application
4	I-Application
was	O
under	O
development	O
for	O
Nintendo	B-Application
Switch	I-Application
,	O
with	O
a	O
planned	O
Japanese	O
release	O
in	O
2018	O
.	O
</s>
<s>
During	O
the	O
Anime	O
Expo	O
in	O
July	O
2019	O
,	O
Level-5	O
abby	O
replied	O
to	O
a	O
Q&A	O
about	O
a	O
future	O
Western	O
release	O
of	O
Yo-kai	B-Application
Watch	I-Application
4	I-Application
and	O
showed	O
the	O
Japanese	O
trailer	O
with	O
English	O
subtitles	O
.	O
</s>
<s>
An	O
enhanced	O
version	O
named	O
Yo-kai	B-Application
Watch	I-Application
4++	I-Application
was	O
released	O
for	O
both	O
Nintendo	B-Application
Switch	I-Application
and	O
Sony	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
on	O
December	O
5	O
,	O
2019	O
,	O
in	O
Japan	O
.	O
</s>
<s>
The	O
release	O
marked	O
the	O
first	O
time	O
a	O
Yo-kai	B-Application
Watch	I-Application
game	O
was	O
released	O
on	O
a	O
other	O
platform	O
,	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
.	O
</s>
<s>
Although	O
it	O
was	O
the	O
best-selling	O
game	O
in	O
Japan	O
during	O
its	O
initial	O
week	O
of	O
release	O
,	O
Yo-kai	B-Application
Watch	I-Application
4	I-Application
had	O
the	O
worst	O
sales	O
in	O
the	O
series	O
to	O
date	O
;	O
with	O
150,721	O
copies	O
sold	O
between	O
June	O
17	O
and	O
June	O
23	O
,	O
2019	O
.	O
</s>
<s>
During	O
its	O
second	O
week	O
,	O
it	O
was	O
displaced	O
by	O
the	O
debuts	O
of	O
Super	B-Application
Mario	I-Application
Maker	I-Application
2	I-Application
and	O
Jikkyou	B-Application
Powerful	I-Application
Pro	I-Application
Yakyuu	I-Application
,	O
selling	O
an	O
additional	O
40,376	O
copies	O
for	O
third	O
place	O
.	O
</s>
<s>
The	O
++	O
rerelease	O
of	O
the	O
game	O
did	O
even	O
worse	O
,	O
selling	O
only	O
10,333	O
copies	O
in	O
its	O
first	O
week	O
at	O
retail	O
on	O
Nintendo	B-Application
Switch	I-Application
alone	O
,	O
missing	O
the	O
Top	O
10	O
of	O
that	O
week	O
's	O
sales	O
charts	O
,	O
and	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
not	O
even	O
placing	O
in	O
the	O
Top	O
30	O
.	O
</s>
<s>
The	O
Nintendo	B-Application
Switch	I-Application
version	O
remained	O
in	O
the	O
Top	O
30	O
of	O
weekly	O
Japanese	O
sales	O
for	O
only	O
seven	O
weeks	O
,	O
having	O
sold	O
a	O
total	O
of	O
60,890	O
copies	O
by	O
its	O
exit	O
.	O
</s>
<s>
Yo-kai	B-Application
Watch	I-Application
4	I-Application
was	O
positively	O
reviewed	O
in	O
Famitsu	O
,	O
scoring	O
37/40	O
.	O
</s>
