<s>
Blackwell	B-Application
Unbound	I-Application
is	O
a	O
2007	O
graphic	O
adventure	O
game	O
developed	O
and	O
published	O
by	O
Wadjet	O
Eye	O
Games	O
.	O
</s>
<s>
It	O
is	O
the	O
sequel	O
to	O
The	B-Application
Blackwell	I-Application
Legacy	I-Application
,	O
and	O
the	O
second	O
entry	O
in	O
the	B-Application
Blackwell	I-Application
series	I-Application
.	O
</s>
<s>
The	O
second	O
game	O
is	O
a	O
prequel	O
to	O
Legacy	O
and	O
follows	O
the	O
investigations	O
of	O
Rosa	O
's	O
aunt	O
Lauren	O
Blackwell	B-Application
and	O
Joey	O
back	O
in	O
the	O
70s	O
.	O
</s>
<s>
As	O
with	O
Legacy	O
,	O
Unbound	O
uses	O
the	O
Adventure	B-Application
Game	I-Application
Studio	I-Application
engine	O
.	O
</s>
<s>
Unbound	O
was	O
originally	O
supposed	O
to	O
be	O
a	O
flashback	O
sequence	O
in	O
the	O
next	O
game	O
,	O
The	O
Blackwell	B-Application
Convergence	O
,	O
but	O
it	O
grew	O
so	O
large	O
that	O
it	O
became	O
a	O
game	O
in	O
its	O
own	O
right	O
.	O
</s>
