<s>
Spiral	B-Application
Knights	I-Application
is	O
a	O
massively	B-Protocol
multiplayer	I-Protocol
online	I-Protocol
game	I-Protocol
created	O
by	O
Three	O
Rings	O
Design	O
and	O
now	O
owned	O
by	O
Grey	O
Havens	O
.	O
</s>
<s>
The	O
free-to-play	O
,	O
Java-based	O
game	O
was	O
released	O
in	O
2011	O
and	O
is	O
still	O
updated	O
occasionally	O
.	O
</s>
<s>
Spiral	B-Application
Knights	I-Application
reached	O
one	O
million	O
accounts	O
in	O
its	O
first	O
three	O
months	O
and	O
three	O
million	O
accounts	O
in	O
its	O
first	O
thirteen	O
months	O
.	O
</s>
<s>
The	O
Spiral	B-Application
Knights	I-Application
are	O
a	O
spacefaring	O
army	O
from	O
the	O
planet	O
Isora	O
.	O
</s>
<s>
In	O
its	O
gameplay	O
,	O
Spiral	B-Application
Knights	I-Application
is	O
a	O
top-down	O
,	O
third-person	O
,	O
real-time	O
action-adventure	O
game	O
,	O
comparable	O
to	O
The	B-Device
Legend	I-Device
of	I-Device
Zelda	I-Device
:	I-Device
Four	I-Device
Swords	I-Device
Adventures	I-Device
.	O
</s>
<s>
In	O
addition	O
to	O
this	O
player-versus-enemy	O
mode	O
,	O
there	O
are	O
two	O
optional	O
player-versus-player	O
modes	O
:	O
one	O
that	O
is	O
similar	O
to	O
Clockworks	O
play	O
,	O
and	O
a	O
Bomberman-like	O
mini-game	O
that	O
differs	O
substantially	O
from	O
the	O
rest	O
of	O
the	O
game	O
.	O
</s>
<s>
The	O
art	O
work	O
draws	O
on	O
many	O
traditions	O
and	O
cultures	O
beyond	O
medieval	O
European	O
knights	O
and	O
outer	O
space	O
science	O
fiction	O
for	O
example	O
,	O
cowboys	O
,	O
wizards	O
,	O
ninjas	B-Application
,	O
and	O
chefs	O
.	O
</s>
<s>
Spiral	B-Application
Knights	I-Application
is	O
massively	B-Application
multiplayer	I-Application
,	O
although	O
each	O
player	O
interacts	O
with	O
a	O
small	O
subset	O
of	O
other	O
online	O
players	O
at	O
any	O
given	O
time	O
.	O
</s>
<s>
There	O
are	O
many	O
different	O
types	O
of	O
weapons	O
that	O
players	O
can	O
use	O
in	O
Spiral	B-Application
Knights	I-Application
.	O
</s>
<s>
Spiral	B-Application
Knights	I-Application
does	O
not	O
have	O
specific	O
character	O
classes	O
,	O
but	O
uses	O
a	O
class-based	O
armor	O
set	O
equipment	O
system	O
instead	O
.	O
</s>
<s>
The	O
Spiral	B-Application
Knights	I-Application
are	O
a	O
spacefaring	O
army	O
serving	O
under	O
the	O
Spiral	O
Order	O
organisation	O
.	O
</s>
<s>
The	O
Gremlins	O
,	O
in	O
an	O
attempt	O
to	O
retrieve	O
the	O
Artifact	O
,	O
besiege	O
the	O
Lab	O
,	O
where	O
the	O
Spiral	B-Application
Knights	I-Application
conduct	O
their	O
research	O
.	O
</s>
<s>
Spiral	B-Application
Knights	I-Application
has	O
been	O
in	O
development	O
since	O
around	O
2007	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
through	O
the	O
Steam	B-Application
software	I-Application
distribution	O
system	O
on	O
June	O
14	O
,	O
2011	O
.	O
</s>
<s>
Critical	O
response	O
to	O
Spiral	B-Application
Knights	I-Application
was	O
positive	O
.	O
</s>
<s>
Ars	O
Technica	O
's	O
Andrew	O
Webster	O
wrote	O
,	O
"	O
The	O
quality	O
of	O
free-to-play	O
games	O
continues	O
to	O
rise	O
,	O
and	O
Spiral	B-Application
Knights	I-Application
is	O
proof	O
of	O
this	O
.	O
</s>
<s>
Nick	O
Popovich	O
was	O
the	O
lead	O
designer	O
of	O
Spiral	B-Application
Knights	I-Application
for	O
all	O
of	O
its	O
early	O
development	O
.	O
</s>
<s>
On	O
January	O
16	O
,	O
2014	O
,	O
Popovich	O
resigned	O
his	O
position	O
at	O
Three	O
Rings	O
,	O
leaving	O
the	O
continuing	O
development	O
of	O
the	O
game	O
to	O
the	O
rest	O
of	O
the	O
Spiral	B-Application
Knights	I-Application
team	O
.	O
</s>
<s>
By	O
July	O
2018	O
the	O
game	O
had	O
over	O
5	O
million	O
registered	O
accounts	O
through	O
Steam	B-Application
.	O
</s>
