<s>
Rescue	B-Device
Rover	I-Device
is	O
a	O
puzzle	O
video	O
game	O
that	O
was	O
developed	O
by	O
id	O
Software	O
and	O
published	O
by	O
Softdisk	O
in	O
1991	O
.	O
</s>
<s>
The	O
game	O
was	O
distributed	O
as	O
shareware	B-License
,	O
with	O
the	O
first	O
10	O
levels	O
making	O
up	O
the	O
shareware	B-License
version	O
,	O
and	O
another	O
20	O
levels	O
being	O
present	O
in	O
the	O
registered	O
version	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Rescue	B-Device
Rover	I-Device
2	I-Device
,	O
followed	O
.	O
</s>
<s>
The	O
player	O
,	O
Roger	O
the	O
owner	O
,	O
must	O
enter	O
robot	O
territory	O
and	O
get	O
him	O
back	O
,	O
hence	O
the	O
name	O
"	O
Rescue	B-Device
Rover	I-Device
"	O
.	O
</s>
<s>
Other	O
items	O
in	O
the	O
areas	O
are	O
grated	O
floors	O
(	O
which	O
robots	O
cannot	O
travel	O
on	O
)	O
,	O
glowing	O
floors	O
(	O
which	O
Roger	O
cannot	O
travel	O
on	O
)	O
,	O
water	O
(	O
including	O
moving	O
water	O
in	O
which	O
crates	O
float	O
with	O
the	O
current	O
)	O
,	O
laser	O
projectors	O
,	O
teleporters	B-General_Concept
and	O
force	O
doors	O
(	O
which	O
need	O
an	O
access	O
card	O
in	O
order	O
to	O
be	O
opened	O
)	O
.	O
</s>
<s>
Rescue	B-Device
Rover	I-Device
had	O
its	O
programming	O
origins	O
in	O
an	O
aborted	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
3	I-Application
port	O
that	O
id	O
proposed	O
to	O
Nintendo	O
six	O
months	O
earlier	O
in	O
1990	O
.	O
</s>
<s>
Though	O
Nintendo	O
declined	O
,	O
the	O
advances	O
that	O
it	O
made	O
in	O
that	O
demo	O
aided	O
development	O
of	O
their	O
later	O
projects	O
,	O
including	O
Commander	B-Application
Keen	I-Application
and	O
Dangerous	B-Language
Dave	I-Language
in	I-Language
the	I-Language
Haunted	I-Language
Mansion	I-Language
.	O
</s>
<s>
Rescue	B-Device
Rover	I-Device
was	O
released	O
in	O
1991	O
.	O
</s>
<s>
In	O
a	O
2008	O
IGN	O
reader	O
poll	O
about	O
their	O
favorite	O
early	O
id	O
game	O
,	O
Rescue	B-Device
Rover	I-Device
received	O
one	O
vote	O
.	O
</s>
