<s>
Defender	B-Application
's	I-Application
Quest	I-Application
:	O
Valley	O
of	O
the	O
Forgotten	O
is	O
a	O
tower	B-Application
defense	I-Application
and	O
role-playing	O
video	O
game	O
developed	O
by	O
American	O
studio	O
Level	O
Up	O
Labs	O
.	O
</s>
<s>
Originally	O
a	O
flash	B-Protocol
game	I-Protocol
distributed	O
on	O
web	O
gaming	O
portals	O
like	O
Kongregate	O
and	O
Newgrounds	B-Operating_System
,	O
it	O
later	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
via	O
Steam	B-Application
in	O
October	O
2012	O
.	O
</s>
<s>
In	O
2016	O
,	O
an	O
HD	O
remaster	O
,	O
Defender	B-Application
's	I-Application
Quest	I-Application
:	O
Valley	O
of	O
the	O
Forgotten	O
:	O
DX	O
Edition	O
,	O
was	O
released	O
for	O
free	O
to	O
all	O
existing	O
owners	O
.	O
</s>
<s>
This	O
version	O
was	O
ported	O
to	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Xbox	B-Device
One	I-Device
and	O
PlayStation	B-Device
Vita	I-Device
.	O
</s>
