<s>
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
(	O
also	O
known	O
as	O
TOS	O
)	O
is	O
a	O
free	O
massively	B-Protocol
multiplayer	I-Protocol
online	I-Protocol
role	I-Protocol
playing	I-Protocol
game	I-Protocol
developed	O
by	O
IMC	O
Games	O
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
by	O
Kim	O
Hakkyu	O
,	O
creator	O
of	O
Ragnarok	B-Protocol
Online	I-Protocol
while	O
the	O
game	O
's	O
background	O
music	O
was	O
done	O
by	O
various	O
groups	O
and	O
artists	O
like	O
SoundTeMP	O
,	O
the	O
same	O
team	O
known	O
for	O
their	O
soundtracks	O
in	O
Ragnarok	B-Protocol
Online	I-Protocol
and	O
Granado	B-Protocol
Espada	I-Protocol
.	O
</s>
<s>
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
was	O
first	O
revealed	O
at	O
Hangame	O
Ex	O
in	O
2011	O
under	O
the	O
code	O
name	O
"	O
Project	O
R1	O
"	O
;	O
leading	O
to	O
the	O
attainment	O
of	O
the	O
title	O
"	O
spiritual	O
successor	O
of	O
Ragnarok	B-Protocol
Online	I-Protocol
"	O
.	O
</s>
<s>
The	O
game	O
was	O
posted	O
to	O
Steam	B-Application
Greenlight	O
on	O
May	O
12	O
,	O
2015	O
and	O
approved	O
in	O
less	O
than	O
10	O
hours	O
.	O
</s>
<s>
The	O
International	O
version	O
was	O
released	O
through	O
Steam	B-Application
as	O
a	O
Founder	O
's	O
Early	O
Access	O
game	O
on	O
March	O
28	O
,	O
2016	O
,	O
with	O
the	O
game	O
releasing	O
as	O
a	O
free-to-play	O
title	O
on	O
April	O
28	O
,	O
2016	O
.	O
</s>
<s>
Located	O
in	O
the	O
South	O
of	O
the	O
Kingdom	O
within	O
the	O
Klaipeda	O
region	O
,	O
the	O
city	O
of	O
Klaipeda	O
is	O
one	O
of	O
the	O
main	O
cities	O
in	O
the	O
world	O
of	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
.	O
</s>
<s>
As	O
a	O
city	O
that	O
precedes	O
the	O
kingdom	O
,	O
Orsha	O
is	O
one	O
of	O
the	O
oldest	O
cities	O
in	O
the	O
world	O
of	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
.	O
</s>
<s>
Located	O
in	O
the	O
North	O
of	O
the	O
Kingdom	O
within	O
the	O
Fedimian	O
Region	O
,	O
the	O
city	O
of	O
Fedimian	O
is	O
one	O
of	O
the	O
three	O
currently	O
accessible	O
cities	O
in	O
the	O
world	O
of	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
.	O
</s>
<s>
In	O
the	O
world	O
of	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
,	O
there	O
are	O
Spot	O
Areas	O
where	O
players	O
can	O
fight	O
in	O
Territory	O
Wars	O
.	O
</s>
<s>
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
utilizes	O
a	O
Class	O
system	O
which	O
determines	O
what	O
abilities	O
a	O
character	O
has	O
access	O
to	O
.	O
</s>
<s>
There	O
are	O
hidden	O
classes	O
in	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
with	O
each	O
one	O
requiring	O
certain	O
requirements	O
to	O
unlock	O
.	O
</s>
<s>
The	O
backgrounds	O
music	O
of	O
Tree	B-Protocol
of	I-Protocol
Savior	I-Protocol
currently	O
consists	O
of	O
more	O
than	O
160	O
individual	O
tracks	O
coming	O
from	O
various	O
groups	O
and	O
artists	O
.	O
</s>
