<s>
Firetrack	B-Application
is	O
a	O
vertically-scrolling	O
shooter	O
programmed	O
by	O
Nick	O
Pelling	O
and	O
released	O
for	O
the	O
BBC	B-Device
Micro	I-Device
and	O
Commodore	O
64	O
platforms	O
in	O
1987	O
by	O
Electric	O
Dreams	O
Software	O
.	O
</s>
<s>
It	O
was	O
also	O
ported	O
to	O
the	O
Acorn	B-Device
Electron	I-Device
by	O
Superior	B-Device
Software	I-Device
in	O
1989	O
as	O
part	O
of	O
the	O
Play	O
It	O
Again	O
Sam	O
7	O
compilation	O
.	O
</s>
<s>
It	O
resembles	O
the	O
1984	O
arcade	O
game	O
Star	B-Application
Force	I-Application
in	O
style	O
and	O
gameplay	O
.	O
</s>
<s>
Nick	O
Pelling	O
designed	O
the	O
game	O
and	O
programmed	O
the	O
BBC	B-Device
Micro	I-Device
and	O
Commodore	O
64	O
versions	O
which	O
were	O
released	O
in	O
1987	O
by	O
Electric	O
Dreams	O
Software	O
.	O
</s>
<s>
When	O
including	O
the	O
game	O
on	O
the	O
1989	O
Play	O
It	O
Again	O
Sam	O
7	O
compilation	O
,	O
Superior	B-Device
Software	I-Device
also	O
commissioned	O
a	O
conversion	O
to	O
the	O
Acorn	B-Device
Electron	I-Device
which	O
was	O
carried	O
out	O
by	O
Chris	O
Terran	O
.	O
</s>
<s>
On	O
the	O
BBC	B-Device
Micro	I-Device
version	O
,	O
it	O
automatically	O
detects	O
sideways	B-General_Concept
RAM	I-General_Concept
expansion	O
if	O
present	O
,	O
which	O
allows	O
more	O
detailed	O
graphics	O
on	O
the	O
levels	O
,	O
without	O
any	O
changes	O
to	O
the	O
underlying	O
gameplay	O
.	O
</s>
<s>
If	O
shadow	B-General_Concept
RAM	I-General_Concept
is	O
present	O
,	O
the	O
graphics	O
are	O
double	O
buffered	O
.	O
</s>
<s>
The	O
Acorn	B-Device
Electron	I-Device
version	O
exploits	O
a	O
division	O
in	O
the	O
way	O
the	O
Electron	O
handles	O
its	O
display	O
:	O
of	O
the	O
seven	O
available	O
graphics	O
modes	O
,	O
two	O
are	O
configured	O
so	O
that	O
the	O
final	O
two	O
of	O
every	O
ten	O
scanlines	O
are	O
blank	O
and	O
are	O
not	O
based	O
on	O
the	O
contents	O
of	O
RAM	O
.	O
</s>
<s>
Firetrack	B-Application
switches	O
from	O
a	O
non-continuous	O
to	O
a	O
continuous	O
graphics	O
mode	O
partway	O
down	O
the	O
display	O
.	O
</s>
