<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
is	O
a	O
light	O
novel	O
series	O
written	O
by	O
Kazuma	O
Kamachi	O
and	O
illustrated	O
by	O
Kiyotaka	O
Haimura	O
.	O
</s>
<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
is	O
a	O
fighting	O
game	O
developed	O
by	O
Shade	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
and	O
published	O
by	O
ASCII	O
Media	O
Works	O
,	O
with	O
Kadokawa	O
Games	O
in	O
charge	O
of	O
sales	O
,	O
on	O
January	O
27	O
,	O
2011	O
.	O
</s>
<s>
ASCII	O
Media	O
Works	O
later	O
developed	O
a	O
revised	O
edition	O
of	O
the	O
game	O
titled	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
PSP	B-Operating_System
the	O
Best	O
,	O
which	O
was	O
released	O
by	O
Kadokawa	O
Games	O
on	O
March	O
22	O
,	O
2012	O
.	O
</s>
<s>
The	O
"	O
battle	O
mode	O
"	O
,	O
also	O
called	O
"	O
vs	O
CPU	O
"	O
,	O
allows	O
the	O
player	O
to	O
fight	O
against	O
an	O
AI-controlled	O
character	O
.	O
</s>
<s>
The	O
opening	O
theme	O
music	O
for	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
PSP	B-Operating_System
game	O
is	O
"	O
Answer	O
"	O
by	O
Maon	O
Kurosaki	O
.	O
</s>
<s>
Two	O
days	O
after	O
the	O
release	O
of	O
the	O
game	O
,	O
a	O
collaboration	O
event	O
with	O
the	O
Oreimo	B-Application
PSP	B-Operating_System
game	O
was	O
held	O
at	O
Akihabara	O
to	O
distribute	O
shopping	O
bags	O
designed	O
with	O
their	O
posters	O
.	O
</s>
<s>
A	O
Certain	O
Scientific	O
Railgun	O
is	O
an	O
action-adventure	O
game	O
developed	O
by	O
Shade	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
and	O
published	O
by	O
ASCII	O
Media	O
Works	O
,	O
with	O
Kadokawa	O
Games	O
in	O
charge	O
of	O
sales	O
,	O
on	O
December	O
8	O
,	O
2011	O
.	O
</s>
<s>
Kadokawa	O
Games	O
later	O
released	O
a	O
PSP	B-Operating_System
the	O
Best	O
edition	O
of	O
the	O
game	O
on	O
March	O
28	O
,	O
2013	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
combination	O
of	O
2D	O
and	O
3D	O
drawings	O
of	O
characters	O
for	O
the	O
conversation	O
and	O
action	B-Application
parts	O
respectively	O
.	O
</s>
<s>
In	O
the	O
"	O
action	B-Application
"	O
part	O
,	O
the	O
player	O
needs	O
to	O
defeat	O
the	O
culprit	O
behind	O
the	O
urban	O
legend	O
during	O
quick	O
time	O
events	O
.	O
</s>
<s>
J.C.Staff	O
produced	O
about	O
80	O
CG	O
events	O
for	O
A	O
Certain	O
Scientific	O
Railgun	O
PSP	B-Operating_System
game	O
,	O
with	O
Kamachi	O
writing	O
the	O
scenarios	O
.	O
</s>
<s>
ASCII	O
Media	O
Works	O
released	O
a	O
promotional	O
video	O
for	O
A	O
Certain	O
Scientific	O
Railgun	O
PSP	B-Operating_System
game	O
on	O
November	O
17	O
,	O
2011	O
.	O
</s>
<s>
Players	O
collected	O
and	O
built	O
decks	O
of	O
cards	O
to	O
battle	O
with	O
other	O
players	O
,	O
which	O
were	O
divided	O
into	O
two	O
types	O
that	O
were	O
located	O
on	O
the	O
upper	O
left	O
corner	O
:	O
magic	O
(	O
symbolized	O
by	O
the	O
Star	O
of	O
David	O
)	O
and	O
science	O
(	O
symbolized	O
by	O
the	O
atom	B-Language
)	O
.	O
</s>
<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Struggle	O
Battle	O
was	O
ranked	O
in	O
Mobage	O
's	O
top	O
20	O
apps	O
and	O
was	O
popular	O
among	O
its	O
users	O
,	O
with	O
over	O
400,000	O
registered	O
players	O
.	O
</s>
<s>
The	O
game	O
entered	O
its	O
second	O
season	O
on	O
February	O
3	O
,	O
2015	O
after	O
ASCII	O
Media	O
Works	O
released	O
a	O
major	O
update	O
,	O
rebranding	O
it	O
as	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Struggle	O
Battle	O
II	O
and	O
expanding	O
it	O
to	O
the	O
GREE	O
platform	O
.	O
</s>
<s>
is	O
a	O
visual	O
novel	O
game	O
developed	O
by	O
Guyzware	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
and	O
PlayStation	B-Device
Vita	I-Device
and	O
published	O
by	O
Namco	O
Bandai	O
Games	O
on	O
February	O
21	O
,	O
2013	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
crossover	O
between	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
and	O
A	O
Certain	O
Scientific	O
Railgun	O
franchises	O
.	O
</s>
<s>
They	O
are	O
set	O
before	O
the	O
events	O
of	O
the	O
Daihasei	O
Festival	O
story	O
arc	O
of	O
the	O
series	O
and	O
the	O
story	O
will	O
lead	O
to	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
The	O
Movie	O
–	O
The	O
Miracle	O
of	O
Endymion	O
.	O
</s>
<s>
The	O
company	O
intended	O
to	O
produce	O
a	O
new	O
game	O
for	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
series	O
but	O
they	O
decided	O
to	O
combine	O
it	O
with	O
A	O
Certain	O
Scientific	O
Railgun	O
franchise	O
.	O
</s>
<s>
Guyzware	O
and	O
Namco	O
Bandai	O
Games	O
announced	O
on	O
June	O
8	O
,	O
2012	O
a	O
collaboration	O
project	O
for	O
a	O
game	O
adaptation	O
of	O
the	O
series	O
,	O
which	O
later	O
revealed	O
to	O
be	O
a	O
crossover	O
visual	O
novel	O
game	O
for	O
PSP	B-Operating_System
.	O
</s>
<s>
The	O
characters	O
were	O
designed	O
using	O
the	O
Live2D	B-Operating_System
system	O
to	O
depict	O
"	O
slimy	O
"	O
movements	O
and	O
expressive	O
gestures	O
.	O
</s>
<s>
was	O
a	O
puzzle	O
game	O
developed	O
by	O
ASCII	O
Media	O
Works	O
for	O
iOS	B-Application
,	O
which	O
was	O
released	O
on	O
July	O
26	O
,	O
2013	O
.	O
</s>
<s>
The	O
game	O
was	O
no	O
longer	O
available	O
in	O
the	O
App	B-Application
Store	I-Application
,	O
with	O
the	O
app	O
's	O
last	O
update	O
being	O
on	O
October	O
31	O
,	O
2014	O
.	O
</s>
<s>
was	O
an	O
action	B-Application
puzzle	O
game	O
developed	O
by	O
Heroz	O
,	O
and	O
published	O
by	O
ASCII	O
Media	O
Works	O
on	O
March	O
16	O
,	O
2014	O
for	O
Android	B-Application
and	O
in	O
April	O
for	O
iOS	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
scheduled	O
to	O
be	O
released	O
in	O
February	O
2014	O
for	O
Android	B-Application
and	O
in	O
March	O
2014	O
for	O
iOS	B-Application
but	O
was	O
postponed	O
to	O
their	O
new	O
release	O
dates	O
.	O
</s>
<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Genuine	O
Mobile	O
Game	O
(	O
)	O
was	O
a	O
massively	B-Protocol
multiplayer	I-Protocol
online	I-Protocol
role-playing	I-Protocol
game	I-Protocol
developed	O
by	O
NetEase	O
Games	O
under	O
the	O
supervision	O
of	O
Kadokawa	O
Corporation	O
,	O
which	O
was	O
released	O
in	O
China	O
on	O
August	O
31	O
,	O
2017	O
for	O
iOS	B-Application
and	O
on	O
September	O
7	O
for	O
Android	B-Application
.	O
</s>
<s>
In	O
July	O
2016	O
,	O
NetEase	O
Games	O
released	O
a	O
trailer	O
that	O
announced	O
their	O
production	O
of	O
a	O
mobile	O
game	O
for	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
series	O
.	O
</s>
<s>
NetEase	O
Games	O
first	O
promoted	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
Genuine	O
Mobile	O
Game	O
in	O
their	O
booth	O
at	O
ChinaJoy	O
2016	O
.	O
</s>
<s>
The	O
company	O
set	O
up	O
an	O
exhibit	O
booth	O
for	O
the	O
game	O
at	O
China	O
International	O
Cartoon	O
&	O
Game	O
(	O
CCG	O
)	O
Expo	O
2017	O
in	O
Shanghai	B-Device
.	O
</s>
<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
Genuine	O
Mobile	O
Game	O
ranked	O
#5	O
in	O
the	O
App	B-Application
Store	I-Application
's	O
top	O
5	O
free	O
game	O
list	O
within	O
24	O
hours	O
of	O
its	O
release	O
.	O
</s>
<s>
is	O
a	O
2018	O
fighting	O
game	O
developed	O
by	O
Access	O
Games	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
and	O
PlayStation	B-Device
Vita	I-Device
and	O
published	O
by	O
Sega	O
on	O
February	O
15	O
.	O
</s>
<s>
Sega	O
and	O
Dengeki	O
Bunko	O
announced	O
a	O
collaboration	O
project	O
to	O
develop	O
a	O
crossover	O
game	O
between	O
the	O
Virtual	B-Application
On	I-Application
franchise	O
and	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
series	O
,	O
along	O
with	O
the	O
release	O
of	O
a	O
teaser	O
video	O
.	O
</s>
<s>
Hajime	O
Katoki	O
redesigned	O
the	O
Virtualoids	O
to	O
match	O
with	O
the	O
characters	O
from	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
series	O
.	O
</s>
<s>
On	O
the	O
day	O
of	O
the	O
game	O
's	O
release	O
,	O
Sega	O
held	O
a	O
Twitter	B-Application
campaign	O
to	O
follow	O
their	O
account	O
and	O
retweet	O
a	O
certain	O
tweet	O
for	O
a	O
chance	O
to	O
win	O
the	O
voice	O
casts	O
 '	O
autographed	O
colored	O
paper	O
sets	O
.	O
</s>
<s>
A	O
Certain	O
Magical	O
Virtual-On	B-Application
ranked	O
#8	O
on	O
the	O
week	O
it	O
was	O
released	O
,	O
with	O
17,938	O
copies	O
sold	O
,	O
but	O
the	O
game	O
's	O
sales	O
later	O
dropped	O
in	O
Japan	O
and	O
received	O
heavy	O
criticism	O
from	O
fans	O
and	O
international	O
press	O
,	O
leading	O
to	O
the	O
suspension	O
of	O
its	O
sales	O
.	O
</s>
<s>
is	O
a	O
role-playing	O
game	O
developed	O
by	O
Headlock	O
for	O
Android	B-Application
and	O
iOS	B-Application
and	O
published	O
by	O
Square	O
Enix	O
on	O
July	O
4	O
,	O
2019	O
.	O
</s>
<s>
Maon	O
Kurosaki	O
performed	O
the	O
first	O
opening	O
theme	O
music	O
of	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Imaginary	O
Fest	O
titled	O
"	O
Junction	O
"	O
,	O
while	O
fripSide	O
performed	O
the	O
second	O
opening	O
theme	O
music	O
titled	O
"	O
Worlds	O
Collide	O
"	O
.	O
</s>
<s>
On	O
January	O
4	O
,	O
2019	O
,	O
Square	O
Enix	O
released	O
a	O
teaser	O
trailer	O
that	O
announced	O
a	O
mobile-based	O
game	O
titled	O
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Imaginary	O
Fest	O
.	O
</s>
<s>
A	B-Application
Certain	I-Application
Magical	I-Application
Index	I-Application
:	O
Imaginary	O
Fest	O
held	O
several	O
crossover	O
events	O
with	O
other	O
anime	O
and	O
video	O
game	O
franchises	O
,	O
including	O
KonoSuba	O
:	O
God	O
's	O
Blessing	O
on	O
this	O
Wonderful	O
World	O
!	O
</s>
<s>
Legend	O
of	O
Crimson	O
,	O
Shakugan	O
no	O
Shana	O
,	O
Nier	B-Application
,	O
That	O
Time	O
I	O
Got	O
Reincarnated	O
as	O
a	O
Slime	O
,	O
The	O
Strongest	O
Sage	O
With	O
the	O
Weakest	O
Crest	O
,	O
The	B-Application
Irregular	I-Application
at	I-Application
Magic	I-Application
High	I-Application
School	I-Application
,	O
Durarara	O
!	O
</s>
<s>
was	O
an	O
adventure	O
game	O
developed	O
by	O
Now	O
Production	O
for	O
Android	B-Application
and	O
iOS	B-Application
and	O
published	O
by	O
D-techno	O
on	O
March	O
27	O
,	O
2020	O
.	O
</s>
<s>
On	O
November	O
28	O
,	O
2019	O
,	O
the	O
official	O
website	O
of	O
A	O
Certain	O
Scientific	O
Railgun	O
:	O
Spectrum	O
Story	O
was	O
opened	O
and	O
a	O
Twitter	B-Application
campaign	O
was	O
launched	O
for	O
a	O
chance	O
to	O
receive	O
a	O
handwritten	O
autograph	O
from	O
Rina	O
Satō	O
,	O
which	O
was	O
also	O
given	O
on	O
the	O
game	O
's	O
release	O
date	O
through	O
another	O
Twitter	B-Application
campaign	O
.	O
</s>
<s>
D-techno	O
released	O
a	O
promotional	O
video	O
of	O
the	O
game	O
on	O
January	O
6	O
,	O
2020	O
,	O
while	O
another	O
Twitter	B-Application
campaign	O
was	O
launched	O
for	O
the	O
first	O
10	O
people	O
who	O
retweet	O
the	O
campaign	O
tweets	O
to	O
receive	O
Quo	O
cards	O
worth	O
On	O
March	O
5	O
,	O
2020	O
,	O
a	O
new	O
Twitter	B-Application
campaign	O
was	O
launched	O
for	O
the	O
first	O
10	O
people	O
who	O
retweet	O
the	O
campaign	O
tweets	O
to	O
receive	O
the	O
app	O
's	O
original	O
Quo	O
cards	O
.	O
</s>
