<s>
Infinity	B-Application
Blade	I-Application
was	O
an	O
action	B-Application
role-playing	I-Application
game	I-Application
developed	O
by	O
Chair	O
Entertainment	O
and	O
Epic	O
Games	O
and	O
released	O
through	O
the	O
Apple	B-Application
App	I-Application
Store	I-Application
on	O
December	O
9	O
,	O
2010	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
iOS	B-Application
video	O
game	O
to	O
run	O
on	O
the	O
Unreal	O
Engine	O
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
was	O
intended	O
to	O
demonstrate	O
the	O
new	O
iOS	B-Application
version	O
of	O
the	O
Unreal	O
Engine	O
,	O
and	O
to	O
combine	O
the	O
combat	O
of	O
Karateka	B-Application
and	O
Prince	B-Application
of	I-Application
Persia	I-Application
with	O
the	O
loneliness	O
of	O
Shadow	B-Application
of	I-Application
the	I-Application
Colossus	I-Application
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
was	O
the	O
fastest-grossing	O
app	O
in	O
the	O
history	O
of	O
iOS	B-Application
upon	O
its	O
release	O
.	O
</s>
<s>
Reviews	O
praised	O
the	O
graphics	O
and	O
compared	O
the	O
mobile	O
game	O
favorably	O
to	O
console	B-Application
games	I-Application
.	O
</s>
<s>
Chair	O
later	O
released	O
an	O
arcade	O
port	O
and	O
two	O
sequels	O
:	O
Infinity	B-Application
Blade	I-Application
II	I-Application
and	O
Infinity	B-Application
Blade	I-Application
III	I-Application
.	O
</s>
<s>
Author	O
Brandon	O
Sanderson	O
also	O
wrote	O
two	O
novellas	O
set	O
between	O
the	O
games	O
:	O
Infinity	B-Application
Blade	I-Application
:	O
Awakening	O
and	O
Infinity	B-Application
Blade	I-Application
:	O
Redemption	O
.	O
</s>
<s>
The	O
game	O
,	O
along	O
with	O
its	O
two	O
sequels	O
,	O
was	O
removed	O
from	O
the	O
App	B-Application
Store	I-Application
on	O
December	O
10	O
,	O
2018	O
,	O
due	O
to	O
difficulties	O
in	O
updating	O
the	O
game	O
for	O
newer	O
hardware	O
.	O
</s>
<s>
In	O
the	O
primary	O
portion	O
of	O
Infinity	B-Application
Blade	I-Application
,	O
the	O
player	O
character	O
travels	O
a	O
mostly	O
linear	O
path	O
through	O
a	O
ruined	O
castle	O
and	O
fights	O
one-on-one	O
battles	O
with	O
oversized	O
enemies	O
.	O
</s>
<s>
Another	O
bloodline	O
ending	O
is	O
unlocked	O
after	O
purchasing	O
the	O
Infinity	B-Application
Blade	I-Application
item	O
:	O
the	O
sword	O
is	O
placed	O
into	O
a	O
pedestal	O
in	O
the	O
castle	O
's	O
underground	O
dungeons	O
and	O
three	O
doors	O
open	O
.	O
</s>
<s>
After	O
fighting	O
the	O
ancestor	O
,	O
the	O
player	O
character	O
is	O
told	O
that	O
the	O
Infinity	B-Application
Blade	I-Application
can	O
prevent	O
immortals	O
like	O
the	O
God	O
King	O
from	O
resurrecting	O
after	O
death	O
.	O
</s>
<s>
The	O
second	O
update	O
,	O
titled	O
Infinity	B-Application
Blade	I-Application
:	O
The	O
Deathless	O
Kings	O
,	O
was	O
released	O
on	O
March	O
2	O
,	O
2011	O
,	O
and	O
added	O
the	O
dungeons	O
as	O
a	O
second	O
branch	O
to	O
the	O
game	O
's	O
path	O
.	O
</s>
<s>
The	O
third	O
update	O
,	O
Infinity	B-Application
Blade	I-Application
:	O
Arena	O
,	O
was	O
released	O
on	O
May	O
19	O
,	O
2011	O
.	O
</s>
<s>
On	O
October	O
4	O
,	O
2011	O
,	O
a	O
fourth	O
update	O
added	O
a	O
new	O
enemy	O
and	O
new	O
equipment	O
to	O
coincide	O
with	O
the	O
announcement	O
of	O
the	O
forthcoming	O
sequel	O
Infinity	B-Application
Blade	I-Application
II	I-Application
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
was	O
created	O
by	O
Chair	O
Entertainment	O
,	O
a	O
subsidiary	O
company	O
of	O
Epic	O
Games	O
.	O
</s>
<s>
In	O
July	O
2010	O
,	O
Chair	O
had	O
both	O
recently	O
finished	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
game	O
Shadow	B-Application
Complex	I-Application
and	O
been	O
acquired	O
by	O
Epic	O
.	O
</s>
<s>
Chair	O
was	O
brainstorming	O
Kinect	B-Algorithm
and	O
Wii	B-Operating_System
games	O
,	O
including	O
an	O
idea	O
similar	O
to	O
Infinity	B-Application
Blade	I-Application
,	O
and	O
Epic	O
was	O
nearing	O
completion	O
of	O
an	O
iOS	B-Application
version	O
of	O
the	O
Unreal	O
Engine	O
3	O
graphics	O
engine	O
and	O
in	O
need	O
of	O
a	O
"	O
killer	O
game	O
"	O
to	O
show	O
it	O
off	O
.	O
</s>
<s>
Epic	O
had	O
previously	O
licensed	O
the	O
engine	O
for	O
use	O
in	O
numerous	O
console	O
and	O
personal	B-Device
computer	I-Device
games	O
.	O
</s>
<s>
The	O
team	O
decided	O
within	O
a	O
few	O
days	O
to	O
work	O
on	O
the	O
Infinity	B-Application
Blade	I-Application
concept	O
,	O
codenamed	O
"	O
Project	O
Sword	O
"	O
.	O
</s>
<s>
Refining	O
the	O
complex	O
touch-based	O
interface	O
was	O
complicated	O
due	O
to	O
the	O
Unreal	O
Engine	O
's	O
incomplete	O
status	O
and	O
the	O
native	O
iOS	B-Application
code	O
library	O
's	O
lack	O
of	O
support	O
for	O
fast	O
touch-based	O
gameplay	O
.	O
</s>
<s>
He	O
described	O
the	O
game	O
's	O
influences	O
as	O
the	O
combat	O
of	O
Karateka	B-Application
and	O
Prince	B-Application
of	I-Application
Persia	I-Application
combined	O
with	O
the	O
"	O
lonely	O
epicness	O
"	O
of	O
Shadow	B-Application
of	I-Application
the	I-Application
Colossus	I-Application
.	O
</s>
<s>
They	O
felt	O
that	O
many	O
other	O
developers	O
accustomed	O
to	O
consoles	O
were	O
wrong	O
to	O
make	O
iOS	B-Application
games	O
that	O
required	O
long-playing	O
experiences	O
to	O
feel	O
meaningful	O
,	O
and	O
so	O
Chair	O
developed	O
the	O
bloodline	O
concept	O
as	O
a	O
natural	O
breakpoint	O
.	O
</s>
<s>
They	O
also	O
felt	O
that	O
mobile	O
games	O
like	O
Infinity	B-Application
Blade	I-Application
with	O
constant	O
action	O
elements	O
went	O
too	O
long	O
without	O
giving	O
the	O
player	O
time	O
to	O
relax	O
and	O
resulted	O
in	O
player	O
exhaustion	O
,	O
and	O
so	O
Chair	O
kept	O
their	O
battles	O
short	O
with	O
brief	O
cinematic	O
pauses	O
in	O
longer	O
battles	O
.	O
</s>
<s>
Cello	B-Application
and	O
nyckelharpa	O
were	O
the	O
primary	O
instruments	O
used	O
.	O
</s>
<s>
The	O
soundtrack	O
was	O
sold	O
as	O
a	O
digital	O
album	O
,	O
Infinity	B-Application
Blade	I-Application
:	O
Original	O
Soundtrack	O
,	O
through	O
several	O
online	O
music	O
retailers	O
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
was	O
noted	O
for	O
its	O
sales	O
at	O
launch	O
,	O
selling	O
more	O
than	O
270,000	O
copies	O
and	O
making	O
over	O
US	O
$1.6	O
million	O
in	O
its	O
first	O
four	O
days	O
—	O
the	O
"	O
fastest-grossing	O
app	O
"	O
ever	O
released	O
for	O
iOS	B-Application
at	O
the	O
time	O
.	O
</s>
<s>
Around	O
fourteen	O
months	O
after	O
the	O
initial	O
release	O
,	O
Chair	O
noted	O
that	O
half	O
of	O
the	O
game	O
's	O
sales	O
were	O
for	O
the	O
iPhone	B-Operating_System
and	O
half	O
were	O
for	O
the	O
iPad	B-Device
and	O
iPod	B-Device
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
was	O
reviewed	O
by	O
several	O
major	O
gaming	O
sites	O
in	O
addition	O
to	O
mobile	O
game-focused	O
sites	O
.	O
</s>
<s>
GamePro	O
Ryan	O
Rigney	O
called	O
the	O
game	O
"	O
downright	O
gorgeous	O
"	O
and	O
said	O
that	O
the	O
graphics	O
were	O
almost	O
at	O
the	O
level	O
of	O
an	O
Xbox	B-Operating_System
360	I-Operating_System
game	O
,	O
which	O
was	O
echoed	O
by	O
John	O
Meyer	O
of	O
Wired	O
,	O
who	O
claimed	O
that	O
it	O
had	O
the	O
best	O
graphics	O
of	O
any	O
iPad	B-Device
game	O
.	O
</s>
<s>
On	O
October	O
28	O
,	O
2011	O
,	O
Epic	O
Games	O
and	O
Adrenaline	O
Amusements	O
released	O
an	O
arcade	O
version	O
of	O
the	O
game	O
,	O
Infinity	B-Application
Blade	I-Application
FX	O
.	O
</s>
<s>
The	O
game	O
is	O
played	O
on	O
a	O
46-inch	O
screen	O
rigged	O
with	O
optical	O
sensors	O
to	O
mimic	O
a	O
large	O
iPhone	B-Operating_System
or	O
iPad	B-Device
screen	O
.	O
</s>
<s>
A	O
sequel	O
to	O
the	O
iOS	B-Application
game	O
,	O
Infinity	B-Application
Blade	I-Application
II	I-Application
,	O
was	O
announced	O
on	O
October	O
4	O
,	O
2011	O
,	O
during	O
the	O
Apple	B-Operating_System
iPhone	I-Operating_System
4S	I-Operating_System
keynote	O
presentation	O
.	O
</s>
<s>
A	O
spinoff	O
game	O
,	O
Infinity	B-Application
Blade	I-Application
:	O
Dungeons	O
,	O
was	O
in	O
development	O
for	O
iOS	B-Application
by	O
Epic	O
Games	O
subsidiary	O
Impossible	O
Games	O
,	O
but	O
was	O
cancelled	O
in	O
February	O
2013	O
when	O
Impossible	O
Games	O
was	O
shut	O
down	O
.	O
</s>
<s>
A	O
final	O
game	O
in	O
the	O
trilogy	O
,	O
Infinity	B-Application
Blade	I-Application
III	I-Application
,	O
was	O
released	O
on	O
September	O
18	O
,	O
2013	O
.	O
</s>
<s>
A	O
novella	O
by	O
author	O
Brandon	O
Sanderson	O
was	O
released	O
before	O
both	O
Infinity	B-Application
Blade	I-Application
II	I-Application
and	O
III	O
to	O
serve	O
as	O
a	O
story	O
bridge	O
between	O
the	O
games	O
.	O
</s>
<s>
Infinity	B-Application
Blade	I-Application
:	O
Awakening	O
was	O
released	O
as	O
an	O
e-book	O
on	O
October	O
4	O
,	O
2011	O
,	O
to	O
correspond	O
with	O
the	O
announcement	O
of	O
Infinity	B-Application
Blade	I-Application
II	I-Application
.	O
</s>
<s>
The	O
second	O
e-book	O
novella	O
,	O
Infinity	B-Application
Blade	I-Application
:	O
Redemption	O
,	O
was	O
released	O
on	O
September	O
9	O
,	O
2013	O
,	O
just	O
before	O
the	O
third	O
game	O
.	O
</s>
<s>
A	O
Chinese	O
version	O
of	O
the	O
game	O
for	O
Xbox	B-Device
One	I-Device
and	O
Android	O
was	O
published	O
by	O
Tencent	O
Games	O
on	O
November	O
28	O
,	O
2015	O
.	O
</s>
<s>
A	O
day	O
after	O
Epic	O
Games	O
removed	O
the	O
Infinity	B-Application
Blade	I-Application
trilogy	O
from	O
the	O
App	B-Application
Store	I-Application
,	O
the	O
titular	O
weapon	O
made	O
a	O
crossover	O
appearance	O
in	O
the	O
winter-themed	O
seventh	O
season	O
of	O
Fortnite	B-Application
Battle	I-Application
Royale	I-Application
as	O
a	O
unique	O
,	O
very	O
powerful	O
melee	O
weapon	O
that	O
can	O
be	O
obtained	O
in	O
a	O
match	O
,	O
granting	O
any	O
player	O
who	O
finds	O
it	O
devastating	O
abilities	O
and	O
extra	O
survivability	O
,	O
at	O
the	O
cost	O
of	O
being	O
unable	O
to	O
use	O
other	O
items	O
.	O
</s>
<s>
Epic	O
Games	O
later	O
brought	O
back	O
the	O
Infinity	B-Application
Blade	I-Application
in	O
February	O
2019	O
as	O
a	O
restricted	O
item	O
that	O
is	O
only	O
available	O
in	O
the	O
limited-time	O
mode	O
"	O
Sword	O
Fight	O
"	O
,	O
reducing	O
its	O
power	O
and	O
allowing	O
multiple	O
copies	O
of	O
it	O
to	O
be	O
found	O
from	O
loot	O
chests	O
.	O
</s>
