<s>
Blasteroids	B-Application
is	O
the	O
third	O
official	O
sequel	B-Language
to	O
the	O
1979	O
multidirectional	O
shooter	O
video	O
game	O
,	O
Asteroids	B-Application
.	O
</s>
<s>
Unlike	O
the	O
previous	O
games	O
,	O
Blasteroids	B-Application
uses	O
raster	B-Algorithm
graphics	I-Algorithm
instead	O
of	O
vector	O
graphics	O
,	O
and	O
has	O
power-ups	O
and	O
a	O
boss	O
.	O
</s>
<s>
Home	O
computer	O
ports	O
of	O
Blasteroids	B-Application
were	O
released	O
by	O
Image	O
Works	O
for	O
the	O
Amiga	B-Device
,	O
Amstrad	B-Device
CPC	I-Device
,	O
Atari	B-Device
ST	I-Device
,	O
Commodore	O
64	O
,	O
MSX	B-Operating_System
,	O
MS-DOS	B-Application
,	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
An	O
emulated	O
version	O
of	O
Blasteroids	B-Application
is	O
an	O
unlockable	O
mini-game	O
in	O
Lego	B-Application
Dimensions	I-Application
.	O
</s>
<s>
The	O
ship	O
can	O
shoot	O
to	O
destroy	O
asteroids	B-Application
and	O
enemy	O
ships	O
.	O
</s>
<s>
Once	O
a	O
sector	O
is	O
completed	O
by	O
destroying	O
all	O
the	O
asteroids	B-Application
,	O
an	O
exit	O
portal	O
appears	O
to	O
lead	O
the	O
player	O
to	O
the	O
galactic	O
map	O
screen	O
.	O
</s>
<s>
The	O
object	O
of	O
the	O
game	O
is	O
to	O
destroy	O
all	O
the	O
asteroids	B-Application
which	O
have	O
a	O
set	O
speed	O
at	O
which	O
they	O
fly	O
through	O
the	O
sector	O
.	O
</s>
<s>
Asteroids	B-Application
come	O
in	O
varying	O
sizes	O
,	O
and	O
when	O
shot	O
,	O
larger	O
asteroids	B-Application
break	O
into	O
multiple	O
smaller	O
ones	O
.	O
</s>
<s>
Asteroids	B-Application
also	O
come	O
in	O
different	O
types	O
.	O
</s>
<s>
Normal	O
asteroids	B-Application
do	O
n't	O
contain	O
anything	O
,	O
but	O
red	O
asteroids	B-Application
can	O
contain	O
power-ups	O
in	O
the	O
form	O
of	O
Power	O
Crystals	O
that	O
are	O
released	O
by	O
completely	O
destroying	O
asteroids	B-Application
.	O
</s>
<s>
Popcorn	O
Asteroids	B-Application
require	O
several	O
hits	O
,	O
which	O
expands	O
their	O
size	O
,	O
and	O
eventually	O
makes	O
them	O
stop	O
spinning	O
.	O
</s>
<s>
Egg	O
asteroids	B-Application
contain	O
leeches	O
which	O
home	O
in	O
on	O
the	O
user	O
's	O
ship	O
and	O
suck	O
out	O
its	O
energy	O
.	O
</s>
<s>
Finally	O
there	O
are	O
Seeker	O
asteroids	B-Application
which	O
home	O
in	O
on	O
the	O
player	O
's	O
ship	O
after	O
being	O
shot	O
.	O
</s>
<s>
Besides	O
asteroids	B-Application
,	O
there	O
are	O
different	O
enemy	O
ships	O
trying	O
to	O
shoot	O
the	O
player	O
,	O
which	O
leave	O
equipment	O
in	O
the	O
form	O
of	O
power-ups	O
when	O
destroyed	O
.	O
</s>
<s>
Mukor	O
is	O
the	O
alien	O
boss	O
,	O
appearing	O
after	O
all	O
sectors	O
are	O
cleared	O
of	O
asteroids	B-Application
.	O
</s>
<s>
A	O
second	O
player	O
can	O
join	O
the	O
game	O
at	O
any	O
time	O
by	O
pressing	O
the	O
Fire	O
button	O
,	O
using	O
1	O
credit	O
and	O
turning	O
Blasteroids	B-Application
into	O
a	O
multiplayer	O
game	O
.	O
</s>
