<s>
Pastfinder	B-Application
is	O
a	O
vertically	O
scrolling	O
shooter	O
designed	O
by	O
David	O
Lubar	O
and	O
published	O
by	O
Activision	O
in	O
1984	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
,	O
Commodore	O
64	O
and	O
MSX	B-Operating_System
home	O
computers	O
.	O
</s>
<s>
The	O
year	O
is	O
8878	O
,	O
and	O
the	O
player	O
is	O
a	O
member	O
of	O
an	O
elite	O
legion	O
of	O
planetary	O
explorers	O
known	O
as	O
The	O
Pastfinders	B-Application
.	O
</s>
<s>
The	O
goal	O
of	O
the	O
Pastfinder	B-Application
is	O
to	O
collect	O
historical	O
artifacts	O
and	O
deliver	O
them	O
to	O
bases	O
scattered	O
around	O
the	O
planet	O
.	O
</s>
<s>
David	O
Lubar	O
began	O
work	O
on	O
Pastfinder	B-Application
with	O
a	O
simple	O
top	O
view	O
.	O
</s>
<s>
Using	O
a	O
unique	O
Atari	B-Device
8-bit	I-Device
hardware	O
feature	O
,	O
he	O
was	O
able	O
to	O
make	O
the	O
3D	O
collisions	O
very	O
accurate	O
.	O
</s>
<s>
Pastfinder	B-Application
was	O
released	O
about	O
the	O
same	O
time	O
as	O
David	O
Crane	O
's	O
Ghostbusters	B-Application
and	O
Activision	O
focused	O
all	O
of	O
their	O
advertising	O
efforts	O
on	O
that	O
title	O
.	O
</s>
<s>
Pastfinder	B-Application
received	O
fairly	O
positive	O
reviews	O
.	O
</s>
