<s>
Gridrunner	B-Application
is	O
a	O
fixed	O
shooter	O
video	O
game	O
written	O
by	O
Jeff	O
Minter	O
and	O
published	O
by	O
Llamasoft	O
for	O
the	O
VIC-20	B-Device
in	O
1982	O
.	O
</s>
<s>
It	O
was	O
ported	O
to	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
,	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
,	O
Commodore	B-Device
PET	I-Device
and	O
Dragon	B-Device
32	I-Device
.	O
</s>
<s>
Many	O
remakes	O
and	O
sequels	O
have	O
followed	O
,	O
including	O
versions	O
for	O
the	O
Atari	B-Device
ST	I-Device
,	O
Amiga	B-Device
,	O
Pocket	B-Device
PC	I-Device
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
iOS	B-Application
.	O
</s>
<s>
The	O
game	O
is	O
similar	O
to	O
the	O
Atari	O
,	O
Inc	O
.	O
arcade	O
game	O
Centipede	B-Application
,	O
with	O
long	O
,	O
segmented	O
enemies	O
that	O
progress	O
in	O
a	O
zig-zag	O
fashion	O
and	O
can	O
be	O
broken	O
apart	O
.	O
</s>
<s>
Llamasoft	O
released	O
Gridrunner	B-Application
in	O
1982	O
for	O
the	O
unexpanded	O
VIC-20	B-Device
.	O
</s>
<s>
Although	O
it	O
draws	O
its	O
inspiration	O
from	O
the	O
arcade	O
game	O
Centipede	B-Application
with	O
the	O
concept	O
of	O
a	O
snake-like	O
enemy	O
descending	O
the	O
screen	O
through	O
a	O
series	O
of	O
obstacles	O
(	O
mushrooms	O
in	O
centipede	B-Application
,	O
pods	O
in	O
Gridrunner	B-Application
)	O
it	O
plays	O
much	O
faster	O
.	O
</s>
<s>
In	O
1983	O
,	O
Minter	O
released	O
Matrix	O
:	O
Gridrunner	B-Application
2	O
,	O
which	O
retained	O
much	O
of	O
the	O
original	O
's	O
gameplay	O
,	O
but	O
introduced	O
new	O
enemy	O
types	O
and	O
a	O
scrolling	O
background	O
.	O
</s>
<s>
In	O
1991	O
,	O
Llamasoft	O
released	O
Super	O
Gridrunner	B-Application
for	O
the	O
Atari	B-Device
ST	I-Device
.	O
</s>
<s>
Gridrunner	B-Application
was	O
revived	O
in	O
2002	O
with	O
Gridrunner++	B-Application
,	O
a	O
shareware	B-License
downloadable	O
title	O
released	O
on	O
Llamasoft	O
's	O
website	O
.	O
</s>
<s>
Originally	O
developed	O
under	O
the	O
working	O
title	O
Gridrunner+++	O
it	O
was	O
released	O
on	O
Windows	B-Application
PCs	I-Application
as	O
Gridrunner	B-Application
Revolution	O
,	O
after	O
a	O
newly	O
introduced	O
rotation	O
mechanic	O
.	O
</s>
<s>
In	O
2012	O
,	O
Llamasoft	O
released	O
a	O
reimagined	O
version	O
for	O
iOS	B-Application
,	O
simply	O
titled	O
Gridrunner	B-Application
.	O
</s>
<s>
Eurogamer	O
called	O
it	O
"	O
the	O
best	O
shooter	O
on	O
iOS	B-Application
,	O
"	O
and	O
Touch	O
Arcade	O
described	O
it	O
as	O
"	O
a	O
retro	O
remake	O
done	O
right	O
"	O
.	O
</s>
<s>
It	O
was	O
later	O
ported	O
to	O
Android	B-Application
as	O
shareware	B-License
.	O
</s>
<s>
This	O
compilation	O
release	O
features	O
a	O
new	O
iteration	O
of	O
Gridrunner	B-Application
and	O
GoatUp	O
,	O
using	O
3D	O
voxel-based	O
graphics	O
.	O
</s>
<s>
Like	O
the	O
iOS	B-Application
version	O
before	O
it	O
,	O
this	O
version	O
is	O
simply	O
titled	O
Gridrunner	B-Application
,	O
and	O
features	O
a	O
retro-arcade	O
aesthetic	O
,	O
but	O
unlike	O
its	O
predecessor	O
,	O
it	O
features	O
changing	O
3D	O
perspectives	O
,	O
new	O
enemy	O
types	O
,	O
and	O
new	O
power-ups	O
.	O
</s>
