<s>
Gopher	O
is	O
an	O
Atari	B-General_Concept
2600	I-General_Concept
game	O
written	O
by	O
Sylvia	O
Day	O
and	O
published	O
by	O
U.S.	O
Games	O
in	O
1982	O
.	O
</s>
<s>
An	O
unlicensed	O
version	O
was	O
released	O
by	O
Zellers	O
in	O
Canada	O
and	O
was	O
called	O
Farmer	B-Application
Dan	I-Application
.	O
</s>
<s>
it	O
uses	O
the	O
box	O
art	O
of	O
Plaque	B-Application
Attack	I-Application
by	O
Activision	O
.	O
</s>
