<s>
O.R.B	B-Application
:	I-Application
Off-World	I-Application
Resource	I-Application
Base	I-Application
(	O
or	O
simply	O
O·R·B	O
)	O
is	O
a	O
space	O
strategy	B-Application
game	I-Application
developed	O
and	O
published	O
by	O
Strategy	O
First	O
.	O
</s>
<s>
Much	O
like	O
Homeworld	B-Application
and	O
its	O
sequel	O
Homeworld	B-Application
2	I-Application
,	O
units	O
can	O
move	O
in	O
all	O
three	O
spatial	O
dimensions	O
.	O
</s>
<s>
The	O
Malus	O
drive	O
the	O
Alyssians	O
from	O
their	O
homeworld	B-Application
,	O
realizing	O
after	O
the	O
fact	O
that	O
a	O
Torumin	O
identical	O
to	O
the	O
one	O
that	O
guides	O
them	O
is	O
also	O
in	O
the	O
hands	O
of	O
the	O
Alyssians	O
.	O
</s>
<s>
As	O
with	O
most	O
strategy	B-Application
games	I-Application
,	O
the	O
object	O
of	O
O·R·B	O
is	O
to	O
defeat	O
the	O
enemy	O
forces	O
by	O
gathering	O
resources	O
to	O
build	O
an	O
attack	O
fleet	O
.	O
</s>
<s>
In	O
contrast	O
,	O
unlike	O
Homeworld	B-Application
,	O
a	O
player	O
's	O
fleet	O
is	O
usually	O
not	O
cumulative	O
,	O
and	O
thus	O
after	O
finishing	O
a	O
specific	O
level	O
the	O
player	O
will	O
be	O
dependent	O
on	O
local	O
sources	O
to	O
rebuild	O
a	O
new	O
(	O
and	O
usually	O
better	O
)	O
fleet	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
average	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
