<s>
PlaneShift	B-Application
is	O
a	O
cross-platform	B-Operating_System
3D	O
Online	O
Multiplayer	B-Protocol
Role	I-Protocol
Playing	I-Protocol
Game	I-Protocol
in	O
a	O
fantasy	B-Application
setting	O
.	O
</s>
<s>
The	O
framework	O
is	O
open	B-Application
source	I-Application
with	O
the	O
server	O
and	O
client	B-Protocol
released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
v2	O
,	O
while	O
the	O
artistic	O
content	O
is	O
covered	O
under	O
a	O
proprietary	B-Application
license	I-Application
.	O
</s>
<s>
All	O
content	O
,	O
however	O
,	O
is	O
available	B-License
free	I-License
of	I-License
cost	I-License
.	O
</s>
<s>
The	O
game	O
requires	O
client	B-Protocol
software	I-Protocol
to	O
be	O
installed	O
on	O
the	O
player	O
's	O
computer	O
.	O
</s>
<s>
PlaneShift	B-Application
takes	O
place	O
inside	O
a	O
colossal	O
stalactite	O
named	O
Yliakum	O
.	O
</s>
<s>
PlaneShift	B-Application
has	O
9	O
playable	O
races	O
,	O
each	O
of	O
which	O
have	O
their	O
own	O
homelands	O
and	O
characteristics	O
.	O
</s>
<s>
The	O
races	O
feature	O
standard	O
fantasy	B-Application
types	O
,	O
like	O
elves	O
and	O
dwarves	O
,	O
but	O
also	O
humanoids	O
made	O
of	O
rock	O
and	O
winged	O
amphibians	O
.	O
</s>
<s>
PlaneShift	B-Application
gameplay	O
is	O
based	O
on	O
classical	O
Multiplayer	B-Protocol
Role	I-Protocol
Playing	I-Protocol
Game	I-Protocol
style	O
,	O
with	O
exploration	O
,	O
magic	O
,	O
single	O
player	O
or	O
team	O
based	O
combat	O
and	O
quests	O
.	O
</s>
<s>
The	O
PlaneShift	B-Application
character	O
creation	O
tool	O
features	O
two	O
options	O
.	O
</s>
<s>
PlaneShift	B-Application
features	O
both	O
player	O
versus	O
environment	O
and	O
player	O
versus	O
player	O
combat	O
.	O
</s>
<s>
PlaneShift	B-Application
uses	O
a	O
skill	O
based	O
progression	O
system	O
,	O
which	O
allows	O
the	O
player	O
to	O
develop	O
this	O
character	O
in	O
any	O
skills	O
without	O
the	O
mandatory	O
choice	O
of	O
a	O
profession	O
.	O
</s>
<s>
PlaneShift	B-Application
magic	O
comprises	O
several	O
distinct	O
"	O
Ways	O
"	O
(	O
Schools	O
)	O
:	O
Crystal	O
Way	O
,	O
Red	O
Way	O
,	O
Brown	O
Way	O
,	O
Azure	O
Way	O
,	O
Blue	O
Way	O
,	O
and	O
Dark	O
Way	O
.	O
</s>
<s>
Casting	O
spells	O
requires	O
combinations	O
of	O
special	O
magical	O
items	O
called	O
glyphs	B-Application
.	O
</s>
<s>
The	O
spells	O
are	O
not	O
known	O
upfront	O
,	O
and	O
have	O
to	O
be	O
researched	O
by	O
combining	O
glyphs	B-Application
in	O
sequence	O
.	O
</s>
<s>
The	O
PlaneShift	B-Application
project	O
is	O
developed	O
under	O
guidance	O
of	O
Atomic	O
Blue	O
,	O
a	O
Texas-based	O
non-profit	O
organization	O
.	O
</s>
<s>
The	O
PlaneShift	B-Application
development	O
team	O
is	O
organised	O
in	O
several	O
departments	O
with	O
corresponding	O
leaders	O
.	O
</s>
<s>
PlaneShift	B-Application
has	O
been	O
open	O
to	O
players	O
for	B-License
free	I-License
since	O
its	O
first	O
public	O
release	O
.	O
</s>
<s>
The	O
server	O
side	O
engine	O
code	O
and	O
the	O
client	B-Protocol
code	O
is	O
written	O
from	O
scratch	O
by	O
the	O
PlaneShift	B-Application
team	O
,	O
while	O
the	O
3D	O
rendering	O
features	O
are	O
based	O
on	O
the	O
Crystal	B-Language
Space	I-Language
3D	O
engine	O
.	O
</s>
<s>
Since	O
the	O
Crystal	B-Language
Space	I-Language
engine	O
is	O
no	O
longer	O
supported	O
,	O
the	O
whole	O
game	O
content	O
is	O
currently	O
being	O
moved	O
to	O
Unreal	O
Engine	O
.	O
</s>
<s>
The	O
game	O
uses	O
two	O
different	O
licenses	B-License
:	O
the	O
engine	O
is	O
released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
v2	O
,	O
and	O
the	O
content	O
is	O
released	O
under	O
a	O
proprietary	B-Application
license	I-Application
.	O
</s>
<s>
The	O
artwork	O
,	O
ruleset	O
,	O
dialog	O
,	O
and	O
other	O
non-engine	O
content	O
of	O
PlaneShift	B-Application
are	O
proprietary	B-Application
and	O
licensed	O
under	O
a	O
custom	O
license	O
:	O
the	O
PlaneShift	B-Application
Content	O
License	O
(	O
PCL	O
)	O
.	O
</s>
<s>
This	O
license	O
also	O
forbids	O
using	O
the	O
content	O
for	O
profit	O
or	O
for	O
unofficial	B-Application
hosting	I-Application
.	O
</s>
<s>
PlaneShift	B-Application
is	O
currently	O
in	O
the	O
alpha	O
stage	O
of	O
development	O
at	O
version	O
0.6.3	O
,	O
codenamed	O
"	O
Azure	O
Spirit	O
"	O
.	O
</s>
<s>
Metacritic	O
lists	O
the	O
game	O
with	O
56	O
points	O
from	O
one	O
review	O
from	O
mmorpg.com	O
.	O
</s>
<s>
PlaneShift	B-Application
has	O
been	O
used	O
in	O
multiple	O
studies	O
regarding	O
development	O
of	O
free	O
software	O
and	O
video	O
games	O
.	O
</s>
<s>
PlaneShift	B-Application
has	O
been	O
also	O
studied	O
as	O
a	O
collaborative	O
software	O
engineering	O
organizational	O
model	O
.	O
</s>
