<s>
Astro	B-Application
Invader	I-Application
,	O
originally	O
released	O
in	O
Japan	O
as	O
lit	O
.	O
</s>
<s>
Astro	B-Application
Invader	I-Application
was	O
ported	O
to	O
the	O
Emerson	B-Application
Arcadia	I-Application
2001	I-Application
in	O
1982	O
.	O
</s>
<s>
Like	O
most	O
Space	O
Invaders-type	O
games	O
of	O
the	O
period	O
,	O
the	O
ship	O
can	O
move	O
left	O
and	O
right	O
(	O
but	O
not	O
up	O
or	O
down	O
)	O
,	O
and	O
can	O
fire	O
one	O
bullet	B-Application
at	O
a	O
time	O
.	O
</s>
<s>
At	O
the	O
beginning	O
of	O
each	O
wave	O
,	O
a	O
flying	B-Language
saucer	I-Language
enters	O
at	O
the	O
top	O
of	O
the	O
screen	O
and	O
begins	O
dropping	O
small	O
aliens	O
into	O
the	O
ten	O
narrow	O
columns	O
.	O
</s>
<s>
At	O
regular	O
intervals	O
,	O
a	O
small	O
flying	B-Language
saucer	I-Language
descends	O
from	O
one	O
of	O
the	O
three	O
wide	O
columns	O
.	O
</s>
<s>
Everything	O
freezes	O
at	O
this	O
point	O
,	O
including	O
the	O
player	O
's	O
ship	O
and	O
bullets	B-Application
and	O
all	O
descending	O
saucers	O
and	O
aliens	O
,	O
and	O
the	O
large	O
saucer	O
flies	O
away	O
.	O
</s>
<s>
An	O
Astro	B-Application
Invader	I-Application
machine	O
appears	O
in	O
the	O
music	O
video	O
for	O
the	O
1982	O
Tom	O
Petty	O
and	O
the	O
Heartbreakers	O
song	O
"	O
You	O
Got	O
Lucky	O
"	O
.	O
</s>
