<s>
A	O
game	B-Application
creation	I-Application
system	I-Application
(	O
GCS	O
)	O
is	O
a	O
consumer-targeted	O
game	O
engine	O
and	O
a	O
set	O
of	O
specialized	O
design	O
tools	O
,	O
and	O
sometimes	O
also	O
a	O
light	O
scripting	B-Language
language	I-Language
,	O
engineered	O
for	O
the	O
rapid	O
iteration	O
of	O
user-derived	O
video	O
games	O
.	O
</s>
<s>
Unlike	O
more	O
developer-oriented	O
game	O
engines	O
,	O
game	B-Application
creation	I-Application
systems	I-Application
promise	O
an	O
easy	O
entry	O
point	O
for	O
novice	O
or	O
hobbyist	O
game	O
designers	O
,	O
with	O
often	O
little	O
to	O
no	O
coding	O
required	O
for	O
simple	O
behaviors	O
.	O
</s>
<s>
Although	O
initially	O
stigmatized	O
,	O
all-in-one	O
game	B-Application
creation	I-Application
systems	I-Application
have	O
gained	O
some	O
legitimacy	O
with	O
the	O
central	O
role	O
of	O
Unity	B-Application
,	O
Pixel	B-Application
Game	I-Application
Maker	I-Application
MV	I-Application
,	O
and	O
GameMaker	B-Operating_System
in	O
the	O
growth	O
of	O
the	O
indie	O
game	O
development	O
community	O
.	O
</s>
<s>
Early	O
game	B-Application
creation	I-Application
systems	I-Application
such	O
as	O
Broderbund	O
's	O
The	B-Application
Arcade	I-Application
Machine	I-Application
(	O
1982	O
)	O
,	O
Pinball	B-Application
Construction	I-Application
Set	I-Application
(	O
1983	O
)	O
,	O
ASCII	O
's	O
War	O
Game	O
Construction	O
Kit	O
(	O
1983	O
)	O
,	O
Thunder	O
Force	O
Construction	O
(	O
1984	O
)	O
,	O
Adventure	B-Application
Construction	I-Application
Set	I-Application
(	O
1984	O
)	O
,	O
Garry	B-Application
Kitchen	I-Application
's	I-Application
GameMaker	I-Application
(	O
1985	O
)	O
.	O
</s>
<s>
Wargame	B-Application
Construction	I-Application
Set	I-Application
(	O
1986	O
)	O
,	O
Shoot'Em-Up	B-Application
Construction	I-Application
Kit	I-Application
(	O
1987	O
)	O
,	O
Mamirin	B-Application
/	I-Application
Dungeon	I-Application
Manjirou	I-Application
(	O
1988	O
)	O
,	O
and	O
Arcade	B-Device
Game	I-Device
Construction	I-Device
Kit	I-Device
(	O
1988	O
)	O
appeared	O
in	O
the	O
1980s	O
on	O
home	O
computers	O
.	O
</s>
<s>
3D	B-Device
Construction	I-Device
Kit	I-Device
was	O
released	O
on	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
in	O
1991	O
,	O
and	O
contained	O
a	O
full	O
polygon-based	O
world	O
creation	O
tool	O
.	O
</s>
<s>
In	O
the	O
1990s	O
,	O
game	B-Application
creation	I-Application
systems	I-Application
for	O
the	O
IBM	B-Device
PC	I-Device
shifted	O
both	O
to	O
the	O
more	O
general	O
and	O
the	O
more	O
specific	O
.	O
</s>
<s>
Whereas	O
frameworks	O
like	O
RSD	B-Application
Game-Maker	I-Application
and	O
Klik	B-Application
&	I-Application
Play	I-Application
attempted	O
to	O
accommodate	O
any	O
genre	O
,	O
communities	O
grew	O
around	O
games	O
like	O
ZZT	B-Application
(	O
later	O
,	O
MegaZeux	O
)	O
that	O
permitted	O
such	O
extensive	O
user	O
modification	O
that	O
they	O
essentially	O
became	O
de	O
facto	O
game	B-Application
creation	I-Application
systems	I-Application
.	O
</s>
<s>
Pie	B-Application
in	I-Application
the	I-Application
Sky	I-Application
Software	O
created	O
a	O
full	O
on	O
2.5D	O
first-person	O
shooter	O
creator	O
out	O
of	O
an	B-Application
engine	I-Application
they	O
previously	O
used	O
internally	O
,	O
which	O
sold	O
in	O
three	O
total	O
versions	O
until	O
2003	O
;	O
3D	B-Application
Game	I-Application
Studio	I-Application
and	O
products	O
by	O
The	B-Application
Game	I-Application
Creators	I-Application
have	O
targeted	O
similar	O
creators	O
.	O
</s>
<s>
In	O
the	O
mid-2000s	O
,	O
with	O
the	O
growth	O
of	O
the	O
World	O
Wide	O
Web	O
and	O
social	O
networking	O
,	O
programs	O
like	O
BlitzBasic	B-Language
and	O
Multimedia	B-Application
Fusion	I-Application
headlined	O
an	O
explosion	O
of	O
interest	O
both	O
in	O
indie	O
games	O
and	O
in	O
canned	O
game	O
design	O
software	O
.	O
</s>
<s>
Whereas	O
earlier	O
game	B-Application
creation	I-Application
systems	I-Application
tend	O
to	O
err	O
on	O
the	O
side	O
of	O
user	O
friendly	O
interfaces	O
,	O
21st-century	O
systems	O
are	O
often	O
distinguished	O
by	O
extensive	O
scripting	B-Language
languages	I-Language
that	O
attempt	O
to	O
account	O
for	O
every	O
possible	O
user	O
variable	O
.	O
</s>
<s>
Other	O
general	O
purpose	O
game	B-Application
creation	I-Application
systems	I-Application
include	O
Game	B-Application
Editor	I-Application
,	O
Construct	B-Operating_System
,	O
Stencyl	B-Application
,	O
and	O
GDevelop	B-Application
.	O
</s>
<s>
Several	O
game	B-Application
creation	I-Application
systems	I-Application
include	O
some	O
of	O
the	O
following	O
tools	O
:	O
</s>
<s>
The	O
rise	O
of	O
game	B-Application
creation	I-Application
systems	I-Application
also	O
saw	O
a	O
rise	O
in	O
the	O
need	O
for	O
free	O
form	O
scripting	B-Language
languages	I-Language
with	O
general	O
purpose	O
use	O
.	O
</s>
<s>
Some	O
packages	O
,	O
such	O
as	O
Conitec	O
's	O
Gamestudio	B-Application
,	O
include	O
a	O
more	O
comprehensive	O
scripting	B-Language
language	I-Language
under	O
the	O
surface	O
to	O
allow	O
users	O
more	O
leeway	O
in	O
defining	O
their	O
games	O
 '	O
behavior	O
.	O
</s>
<s>
While	O
most	O
of	O
the	O
mainstream	O
and	O
popular	O
game	B-Application
creation	I-Application
systems	I-Application
may	O
be	O
general-purpose	O
,	O
several	O
exist	O
solely	O
for	O
specific	O
genres	O
.	O
</s>
<s>
Platform	O
games	O
:	O
LittleBigPlanet	B-Application
,	O
Super	B-Device
Mario	I-Device
Maker	I-Device
,	O
PlataGO	O
!	O
</s>
