<s>
Blue	B-Application
Archive	I-Application
(	O
;	O
)	O
is	O
a	O
role-playing	O
game	O
developed	O
by	O
Nexon	O
Games	O
(	O
formerly	O
NAT	O
Games	O
)	O
,	O
a	O
subsidiary	O
of	O
Nexon	O
.	O
</s>
<s>
It	O
was	O
released	O
in	O
2021	O
for	O
Android	B-Application
and	O
iOS	B-Application
,	O
first	O
in	O
Japan	O
by	O
Yostar	O
and	O
worldwide	O
later	O
that	O
year	O
by	O
Nexon	O
.	O
</s>
<s>
An	O
anime	O
television	O
series	O
adaptation	O
titled	O
Blue	B-Application
Archive	I-Application
The	O
Animation	O
has	O
been	O
announced	O
.	O
</s>
<s>
Blue	B-Application
Archive	I-Application
is	O
a	O
tactical	O
role-playing	O
game	O
that	O
allows	O
the	O
player	O
to	O
form	O
and	O
mobilize	O
units	O
of	O
up	O
to	O
six	O
members	O
(	O
two	O
"	O
Specials	O
"	O
and	O
four	O
"	O
Strikers	O
"	O
)	O
to	O
participate	O
in	O
various	O
military	O
campaigns	O
with	O
.	O
</s>
<s>
More	O
students	O
can	O
be	O
recruited	O
through	O
the	O
gacha	O
system	O
using	O
in-game	B-Application
currency	I-Application
,	O
which	O
may	O
be	O
purchased	O
through	O
in-app	O
purchases	O
.	O
</s>
<s>
Blue	B-Application
Archive	I-Application
takes	O
place	O
in	O
the	O
academy	O
city	O
of	O
Kivotos	O
,	O
which	O
was	O
established	O
by	O
the	O
union	O
of	O
thousands	O
of	O
academies	O
.	O
</s>
<s>
Yostar	O
announced	O
the	O
mobile	O
game	O
and	O
held	O
closed	O
beta	O
tests	O
for	O
the	O
Android	B-Application
version	O
in	O
July	O
2020	O
.	O
</s>
<s>
Blue	B-Application
Archive	I-Application
was	O
released	O
worldwide	O
on	O
November	O
8	O
of	O
the	O
same	O
year	O
by	O
Nexon	O
.	O
</s>
