<s>
Corpse	B-Operating_System
Craft	I-Operating_System
:	I-Operating_System
Incident	I-Operating_System
at	I-Operating_System
Weardd	I-Operating_System
Academy	I-Operating_System
is	O
a	O
Flash	B-Operating_System
and	O
web	B-Protocol
browser	I-Protocol
game	I-Protocol
developed	O
by	O
Grey	O
Havens	O
and	O
released	O
on	O
their	O
game	O
portal	O
Whirled	O
in	O
2008	O
.	O
</s>
<s>
A	O
version	O
for	O
the	O
iPad	B-Device
was	O
released	O
in	O
December	O
,	O
2010	O
.	O
</s>
<s>
The	O
first	O
eight	O
levels	O
of	O
the	O
game	O
can	O
be	O
played	O
for	O
free	O
using	O
the	O
Flash	B-Operating_System
version	O
of	O
the	O
game	O
,	O
further	O
advancement	O
in	O
the	O
game	O
requires	O
one	O
United	O
States	O
dollar	O
to	O
be	O
paid	O
(	O
as	O
of	O
2012	O
update	O
,	O
every	O
part	O
of	O
the	O
game	O
is	O
now	O
free	O
)	O
.	O
</s>
<s>
The	O
iOS	B-Operating_System
version	O
has	O
a	O
Metacritic	O
score	O
of	O
86%	O
based	O
on	O
4	O
critic	O
reviews	O
.	O
</s>
