<s>
Astellia	B-Protocol
(	O
sometimes	O
known	O
as	O
Astellia	B-Protocol
Online	O
)	O
is	O
a	O
massively	B-Protocol
multiplayer	I-Protocol
online	I-Protocol
role-playing	I-Protocol
game	I-Protocol
developed	O
by	O
Korean	O
Studio	O
8	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
high	O
fantasy	O
MMORPG	B-Protocol
that	O
uses	O
a	O
system	O
of	O
summonable	O
companions	O
called	O
Astels	O
.	O
</s>
<s>
New	O
version	O
of	O
the	O
game	O
called	O
Astellia	B-Protocol
Royal	O
was	O
released	O
as	O
free-to-play	O
in	O
Steam	O
March	O
2021	O
.	O
</s>
<s>
The	O
game	O
was	O
rerereleased	O
in	O
west	O
as	O
a	O
NFT	B-Protocol
game	I-Protocol
called	O
Astel	O
of	O
Atra	O
in	O
December	O
2022	O
.	O
</s>
<s>
In	O
this	O
version	O
of	O
the	O
game	O
the	O
Astels	O
are	O
tradeable	O
NFTs	O
stored	O
in	O
Polygon	B-Protocol
blockchain	O
.	O
</s>
<s>
It	O
's	O
one	O
of	O
the	O
first	O
play-to-earn	B-Protocol
blockchain/cryptocurrency	O
titles	O
released	O
(	O
along	O
with	O
other	O
Korean	O
MMORPG	B-Protocol
title	O
MIR4	O
of	O
The	O
Legend	O
of	O
Mir	O
series	O
)	O
.	O
</s>
