<s>
Mortal	B-Protocol
Online	I-Protocol
is	O
a	O
first-person	O
,	O
open-world	O
,	O
PvP/PvE	O
sandbox	O
MMORPG	B-Protocol
developed	O
and	O
published	O
by	O
the	O
Swedish	O
independent	O
video	O
game	O
company	O
Star	O
Vault	O
.	O
</s>
<s>
Mortal	B-Protocol
Online	I-Protocol
was	O
released	O
on	O
June	O
9	O
,	O
2010	O
.	O
</s>
<s>
The	O
game	O
is	O
inspired	O
by	O
the	O
desire	O
to	O
return	O
to	O
Ultima	B-Protocol
Online	I-Protocol
's	I-Protocol
player-controlled	O
,	O
sandbox-style	O
game	O
design	O
;	O
it	O
uses	O
Epic	O
Games	O
 '	O
Unreal	O
Engine	O
3	O
and	O
features	O
a	O
skill-based	O
,	O
real-time	B-Application
combat	I-Application
system	O
.	O
</s>
<s>
Mortal	B-Protocol
Online	I-Protocol
does	O
not	O
have	O
a	O
traditional	O
level/class	O
system	O
,	O
but	O
rather	O
a	O
skill	O
and	O
attribute	O
system	O
similar	O
to	O
the	O
Elder	O
Scrolls	O
series	O
.	O
</s>
<s>
In	O
October	O
2010	O
,	O
approximately	O
four	O
months	O
after	O
its	O
official	O
release	O
,	O
Mortal	B-Protocol
Online	I-Protocol
's	O
game	O
engine	O
was	O
rebuilt	O
,	O
making	O
it	O
possible	O
for	O
its	O
developers	O
to	O
implement	O
better	O
graphics	O
,	O
increase	O
performance	O
and	O
introduce	O
advanced	O
features	O
which	O
were	O
previously	O
not	O
possible	O
on	O
the	O
older	O
engine	O
.	O
</s>
<s>
Mortal	B-Protocol
Online	I-Protocol
has	O
both	O
PvP	O
and	O
PvE	O
content	O
,	O
with	O
the	O
design	O
focus	O
on	O
PvP	O
.	O
</s>
<s>
Regarding	O
the	O
PvP	O
content	O
,	O
Mortal	B-Protocol
Online	I-Protocol
has	O
an	O
FFA	O
(	O
Free-For-All	O
)	O
PvP	O
system	O
with	O
consequences	O
for	O
killing	O
other	O
players	O
in	O
the	O
form	O
of	O
"	O
flags	O
"	O
which	O
range	O
from	O
yellow	O
(	O
fledgling	O
)	O
,	O
to	O
blue	O
(	O
innocent	O
)	O
,	O
to	O
grey	O
(	O
criminal	O
)	O
,	O
to	O
red	O
(	O
murderer	O
)	O
.	O
</s>
<s>
Being	O
a	O
criminal	O
in	O
Mortal	B-Protocol
Online	I-Protocol
(	O
also	O
known	O
as	O
being	O
locally	O
or	O
globally	O
"	O
allowed	O
"	O
)	O
means	O
that	O
other	O
players	O
can	O
either	O
attack	O
you	O
without	O
being	O
flagged	O
themselves	O
,	O
or	O
can	O
call	O
the	O
NPC	O
guards	O
on	O
you	O
in	O
certain	O
towns	O
.	O
</s>
