<s>
Leadwerks	B-Language
is	O
a	O
cross-platform	O
game	O
engine	O
developed	O
by	O
Leadwerks	B-Language
Software	O
that	O
focuses	O
on	O
ease	O
of	O
use	O
and	O
learning	O
.	O
</s>
<s>
The	O
software	O
supports	O
Windows	O
and	O
Linux	B-Application
,	O
with	O
OS	O
X	O
support	O
in	O
development	O
.	O
</s>
<s>
Leadwerks	B-Language
is	O
currently	O
on	O
its	O
fourth	O
major	O
version	O
and	O
is	O
sold	O
through	O
the	O
Steam	B-Application
digital	O
distribution	O
platform	O
.	O
</s>
<s>
Leadwerks	B-Language
is	O
written	O
in	O
the	O
C++	B-Language
programming	I-Language
language	I-Language
and	O
makes	O
use	O
of	O
the	O
OpenGL	B-Application
4.0	O
graphics	O
API	O
.	O
</s>
<s>
Scripting	O
is	O
provided	O
by	O
the	O
Lua	B-Language
programming	I-Language
language	I-Language
,	O
with	O
LuaJIT	O
employed	O
for	O
just-in-time	O
compilation	O
of	O
scripts	O
to	O
machine	O
code	O
.	O
</s>
<s>
Leadwerks	B-Language
Game	O
Engine	O
is	O
marketed	O
as	O
an	O
easy	O
to	O
learn	O
game	O
development	O
system	O
,	O
with	O
three	O
layers	O
of	O
development	O
intended	O
to	O
ease	O
the	O
learning	B-General_Concept
curve	I-General_Concept
.	O
</s>
<s>
Lua	B-Language
script	I-Language
allows	O
more	O
advanced	O
game	O
mechanics	O
and	O
custom	O
behavior	O
,	O
while	O
C++	B-Language
can	O
be	O
used	O
for	O
low-level	O
programming	O
and	O
importing	O
external	O
libraries	O
.	O
</s>
<s>
The	O
standard	O
version	O
of	O
Leadwerks	B-Language
Game	O
Engine	O
retails	O
for	O
$49.99	O
on	O
Steam	B-Application
and	O
supports	O
Lua	B-Language
programming	O
.	O
</s>
<s>
The	O
C++	B-Language
SDK	O
DLC	O
adds	O
support	O
for	O
C++	B-Language
programming	O
,	O
with	O
project	O
templates	O
for	O
Visual	O
Studio	O
and	O
the	O
Code::Blocks	O
IDE	O
for	O
Linux	B-Application
.	O
</s>
<s>
Several	O
model	O
pack	O
DLCs	O
are	O
also	O
available	O
,	O
as	O
well	O
as	O
a	O
store	O
for	O
user-created	O
3D	O
models	O
,	O
textures	O
,	O
scripts	O
,	O
and	O
sounds	O
,	O
built	O
on	O
the	O
Steam	B-Application
Workshop	O
system	O
.	O
</s>
<s>
Leadwerks	B-Language
Game	O
Engine	O
began	O
as	O
a	O
free	O
companion	O
to	O
the	O
BSP	O
map	O
editor	O
3D	O
World	O
Studio	O
.	O
</s>
<s>
Version	O
1.0	O
of	O
Leadwerks	B-Language
Game	O
Engine	O
was	O
released	O
in	O
2007	O
.	O
</s>
<s>
The	O
engine	O
utilized	O
OpenGL	B-Application
2.1	O
and	O
used	O
a	O
combination	O
of	O
texture-based	O
lightmaps	O
and	O
per-vertex	O
lighting	O
.	O
</s>
<s>
In	O
version	O
2.1	O
the	O
renderer	O
was	O
switched	O
to	O
a	O
deferred	O
renderer	O
,	O
making	O
Leadwerks	B-Language
the	O
second	O
commercial	O
game	O
engine	O
in	O
the	O
world	O
to	O
utilize	O
this	O
now-common	O
technique	O
(	O
the	O
first	O
being	O
the	O
X-Ray	B-Application
Engine	I-Application
that	O
powers	O
the	O
S.T.A.L.K.E.R.	B-Application
</s>
<s>
In	O
June	O
of	O
the	O
same	O
year	O
,	O
the	O
company	O
launched	O
a	O
Kickstarter	O
campaign	O
for	O
Linux	B-Application
support	O
,	O
raising	O
$	O
42,000	O
in	O
six	O
weeks	O
.	O
</s>
<s>
In	O
January	O
2014	O
,	O
version	O
3.1	O
was	O
launched	O
on	O
Steam	B-Application
with	O
support	O
for	O
Windows	O
and	O
Linux	B-Application
,	O
a	O
new	O
deferred	O
renderer	O
,	O
and	O
mobile	O
support	O
removed	O
.	O
</s>
<s>
During	O
the	O
2014	O
Steam	B-Application
Winter	O
Sale	O
,	O
Leadwerks	B-Language
Game	O
Engine	O
won	O
the	O
Community	O
Choice	O
Award	O
and	O
was	O
featured	O
on	O
the	O
front	O
page	O
of	O
Steam	B-Application
.	O
</s>
