<s>
Tharolian	B-Device
Tunnels	I-Device
is	O
a	O
fixed	O
shooter	O
for	O
the	O
Apple	B-Device
II	I-Device
family	O
of	O
computers	O
programmed	O
by	O
Rod	O
Nelsen	O
and	O
published	O
by	O
Datamost	O
in	O
1982	B-Application
.	O
</s>
<s>
The	O
game	O
is	O
similar	O
to	O
Space	B-Application
Invaders	I-Application
.	O
</s>
<s>
Similar	O
in	O
style	O
to	O
Space	B-Application
Invaders	I-Application
and	O
Datamost	O
's	O
Cavern	B-Application
Creatures	I-Application
,	O
the	O
game	O
puts	O
you	O
in	O
control	O
of	O
a	O
single	O
armed	O
spacecraft	O
pitted	O
against	O
numerous	O
waves	O
of	O
attacking	O
aliens	O
.	O
</s>
<s>
This	O
level	O
closely	O
parallels	O
Space	B-Application
Invaders	I-Application
,	O
with	O
the	O
aliens	O
methodically	O
sweeping	O
from	O
side	O
to	O
side	O
,	O
firing	O
at	O
the	O
player	O
,	O
dropping	O
slightly	O
on	O
each	O
pass	O
,	O
and	O
increasing	O
in	O
speed	O
as	O
their	O
numbers	O
dwindle	O
.	O
</s>
<s>
Unlike	O
Space	B-Application
Invaders	I-Application
,	O
the	O
player	O
has	O
no	O
protective	O
barriers	O
and	O
must	O
also	O
dodge	O
fiery	O
meteors	O
.	O
</s>
