<s>
Boulder	B-Application
Dash	I-Application
II	I-Application
is	O
a	O
2D	O
maze-puzzle	O
video	O
game	O
designed	O
by	O
Peter	B-Application
Liepa	I-Application
and	O
released	O
in	O
1985	O
by	O
First	O
Star	O
Software	O
.	O
</s>
<s>
It	O
is	O
the	O
first	O
sequel	O
to	O
the	O
original	O
Boulder	B-Application
Dash	I-Application
.	O
</s>
<s>
Boulder	B-Application
Dash	I-Application
II	I-Application
was	O
published	O
under	O
several	O
titles	O
;	O
Rockford	O
's	O
Riot	O
on	O
the	O
MSX	B-Operating_System
,	O
Rockford	O
's	O
Revenge	O
on	O
the	O
Commodore	O
64	O
.	O
</s>
<s>
The	O
second	O
release	O
in	O
Japan	O
was	O
titled	O
Champion	O
Boulder	B-Application
Dash	I-Application
,	O
but	O
it	O
is	O
not	O
a	O
port	O
of	O
the	O
western	O
game	O
.	O
</s>
<s>
Super	O
Boulder	B-Application
Dash	I-Application
(	O
1986	O
–	O
Apple	O
II	O
,	O
C64	O
,	O
MS-DOS	O
)	O
was	O
a	O
compilation	O
of	O
Boulder	B-Application
Dash	I-Application
and	O
Boulder	B-Application
Dash	I-Application
II	I-Application
published	O
by	O
Electronic	O
Arts	O
.	O
</s>
<s>
Paul	O
Rixon	O
for	O
Page	O
6	O
said	O
"	O
The	O
majority	O
of	O
Atarians	O
will	O
already	O
have	O
the	O
Boulderdash	B-Application
duo	O
in	O
their	O
collections	O
,	O
but	O
if	O
it	O
's	O
missing	O
from	O
yours	O
then	O
you	O
ought	O
to	O
make	O
amends	O
as	O
soon	O
as	O
possible.	O
"	O
</s>
<s>
said	O
"	O
despite	O
the	O
extra	O
complexities	O
,	O
it	O
does	O
n't	O
seem	O
any	O
harder	O
overall	O
–	O
indeed	O
,	O
experienced	O
Boulder	B-Application
Dash	I-Application
players	O
may	O
be	O
able	O
to	O
plough	O
straight	O
through	O
level	O
one	O
at	O
virtually	O
the	O
first	O
attempt	O
.	O
</s>
<s>
Crash	O
said	O
"	O
I	O
expected	O
Rockford	O
's	O
Riot	O
to	O
be	O
a	O
step	O
forward	O
from	O
Boulder	B-Application
Dash	I-Application
,	O
but	O
it	O
's	O
really	O
just	O
a	O
step	O
sideways	O
.	O
</s>
<s>
Clare	O
Edgeley	O
for	O
Sinclair	O
User	O
said	O
"	O
Rockford	O
's	O
Riot	O
is	O
packaged	O
–	O
in	O
a	O
ludicrous	O
vertical	O
box	O
crowned	O
by	O
a	O
luminous	O
disc	O
–	O
with	O
Boulder	B-Application
Dash	I-Application
,	O
so	O
you	O
can	O
see	O
exactly	O
how	O
similar	O
both	O
games	O
are.	O
"	O
</s>
<s>
Craig	O
Grannell	O
for	O
the	O
2012	O
Sinclair	B-Operating_System
ZX	I-Operating_System
Spectrum	I-Operating_System
And	O
Commodore	O
64	O
Book	O
said	O
"	O
Rockford	O
's	O
Revenge	O
provided	O
gamer	O
with	O
a	O
new	O
set	O
of	O
Liepa-designed	O
caves	O
,	O
but	O
little	O
else	O
"	O
.	O
</s>
