<s>
is	O
a	O
1990	B-Application
action	B-Application
video	I-Application
game	I-Application
published	O
by	O
Information	O
Global	O
Service	O
(	O
IGS	O
)	O
for	O
the	O
original	B-Device
Game	I-Device
Boy	I-Device
exclusively	O
in	O
Japan	O
on	O
October	O
12	O
,	O
1990	B-Application
.	O
</s>
<s>
It	O
is	O
the	O
first	O
Game	B-Device
Boy	I-Device
title	O
to	O
be	O
published	O
by	O
that	O
company	O
.	O
</s>
<s>
The	O
Dortoise	O
Troops	O
have	O
hidden	O
the	O
ten	O
power-up	O
parts	O
throughout	O
outer	O
space	O
so	O
that	O
Astro	B-Application
Rabby	I-Application
cannot	O
really	O
fly	O
.	O
</s>
<s>
The	O
concept	O
of	O
Astro	B-Application
Rabby	I-Application
is	O
that	O
the	O
player	O
is	O
a	O
rabbit	O
who	O
has	O
to	O
travel	O
through	O
certain	O
top-viewed	O
levels	O
with	O
automatic	O
scrolling	O
.	O
</s>
<s>
Sometimes	O
,	O
power-ups	O
are	O
given	O
that	O
will	O
extend	O
the	O
relatively	O
short	O
time	O
limit	O
that	O
Astro	B-Application
Rabby	I-Application
offers	O
.	O
</s>
<s>
German	O
video	O
gaming	O
magazine	O
Power	O
Play	O
gave	O
Astro	B-Application
Rabby	I-Application
a	O
score	O
of	O
44%	O
(	O
the	O
equivalent	O
to	O
a	O
letter	O
grade	O
of	O
F	O
)	O
in	O
their	O
February	O
1991	O
issue	O
.	O
</s>
