<s>
is	O
a	O
tactical	O
role-playing	O
game	O
for	O
the	O
PlayStation	B-Device
Vita	I-Device
and	O
PlayStation	B-Operating_System
4	I-Operating_System
video	B-Device
game	I-Device
consoles	I-Device
.	O
</s>
<s>
While	O
it	O
is	O
the	O
sixth	O
numbered	O
entry	O
in	O
the	O
mainline	O
entries	O
of	O
the	O
Summon	B-Application
Night	I-Application
series	I-Application
,	O
it	O
is	O
only	O
the	O
second	O
one	O
to	O
be	O
translated	O
into	O
English	O
,	O
after	O
2015	O
's	O
release	O
of	O
Summon	B-Application
Night	I-Application
5	I-Application
,	O
also	O
by	O
Gaijinworks	O
.	O
</s>
<s>
Similar	O
to	O
prior	O
mainline	O
entries	O
in	O
the	O
Summon	B-Application
Night	I-Application
video	O
game	O
series	O
,	O
the	O
game	O
plays	O
as	O
a	O
strategic/tactical	O
role-playing	O
video	O
game	O
,	O
with	O
elements	O
of	O
visual	O
novels	O
.	O
</s>
<s>
The	O
core	O
three	O
members	O
of	O
the	O
cast	O
(	O
Raj	O
,	O
Amu	O
,	O
and	O
Ist	O
)	O
are	O
the	O
primary	O
protagonists	O
,	O
while	O
the	O
game	O
plot	O
involves	O
them	O
meeting	O
up	O
with	O
characters	O
from	O
across	O
the	O
entire	O
Summon	B-Application
Night	I-Application
series	I-Application
.	O
</s>
<s>
The	O
game	O
is	O
the	O
second	O
mainline	O
Summon	B-Application
Night	I-Application
video	O
game	O
to	O
be	O
translated	O
and	O
released	O
in	O
English	O
regions	O
,	O
after	O
the	O
prior	O
entry	O
,	O
Summon	B-Application
Night	I-Application
5	I-Application
.	O
</s>
<s>
Victor	O
Ireland	O
of	O
Gaijinworks	O
announced	O
that	O
the	O
game	O
would	O
be	O
one	O
of	O
his	O
biggest	O
game	O
translation	O
undertakings	O
,	O
with	O
the	O
game	O
script	O
amounting	O
to	O
the	O
equivalent	O
of	O
five	O
novels	O
,	O
50%	O
larger	O
than	O
the	O
size	O
of	O
the	O
already	O
large	O
Summon	B-Application
Night	I-Application
5	I-Application
.	O
</s>
<s>
Ireland	O
cited	O
the	O
popularity	O
of	O
the	O
PS4	B-Operating_System
as	O
the	O
main	O
reason	O
for	O
translating	O
the	O
title	O
,	O
stating	O
that	O
releasing	O
it	O
for	O
its	O
large	O
userbase	O
was	O
the	O
best	O
way	O
to	O
bring	O
popularity	O
to	O
the	O
previously	O
niche	O
series	O
.	O
</s>
<s>
The	O
game	O
saw	O
a	O
physical	O
release	O
in	O
North	O
America	O
,	O
but	O
was	O
exclusively	O
a	O
digital	B-Protocol
download	I-Protocol
in	O
Europe	O
.	O
</s>
<s>
The	O
game	O
debuted	O
a	O
number	O
3	O
on	O
the	O
Japanese	O
charts	O
with	O
its	O
Vita	O
release	O
,	O
with	O
40,076	O
units	O
sold	O
,	O
and	O
number	O
6	O
with	O
its	O
PS4	B-Operating_System
release	O
,	O
selling	O
an	O
additional	O
16,750	O
units	O
,	O
totaling	O
for	O
56,826	O
sold	O
in	O
its	O
first	O
week	O
.	O
</s>
<s>
This	O
was	O
around	O
half	O
of	O
the	O
prior	O
game	O
's	O
releases	O
,	O
Summon	B-Application
Night	I-Application
4	I-Application
and	O
Summon	B-Application
Night	I-Application
5	I-Application
,	O
which	O
both	O
sold	O
over	O
100,000	O
copies	O
in	O
their	O
debut	O
week	O
.	O
</s>
<s>
The	O
PS4	B-Operating_System
version	O
of	O
Summon	B-Application
Night	I-Application
6	I-Application
has	O
now	O
been	O
removed	O
from	O
the	O
PlayStation	O
store	O
for	O
unknown	O
reasons	O
.	O
</s>
