<s>
is	O
a	O
scrolling	O
shooter	O
,	O
developed	O
and	O
published	O
by	O
Qute	O
,	O
which	O
was	O
released	O
on	O
April	O
7	O
,	O
2011	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
.	O
</s>
<s>
Despite	O
the	O
original	O
Xbox	B-Operating_System
360	I-Operating_System
version	O
only	O
being	O
released	O
in	O
Japan	O
,	O
it	O
was	O
a	O
region-free	O
release	O
.	O
</s>
<s>
A	O
version	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
published	O
by	O
Degica	O
,	O
was	O
released	O
in	O
2015	O
.	O
</s>
<s>
In	O
2021	O
,	O
Eschatos	B-Application
was	O
ported	O
to	O
the	O
Nintendo	B-Application
Switch	I-Application
exclusively	O
in	O
Japan	O
,	O
and	O
was	O
released	O
worldwide	O
on	O
the	O
Switch	O
and	O
PlayStation	B-Operating_System
4	I-Operating_System
in	O
2022	O
.	O
</s>
<s>
Apart	O
from	O
the	O
main	O
game	O
,	O
two	O
previous	O
Wonderswan	O
games	O
by	O
the	O
developer	O
,	O
Judgement	B-Application
Silversword	I-Application
and	O
Cardinal	O
Sins	O
,	O
came	O
bundled	O
with	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
release	O
of	O
Eschatos	B-Application
.	O
</s>
<s>
There	O
is	O
a	O
unique	O
timing	O
score	O
utilized	O
in	O
each	O
game	O
(	O
Eschatos	B-Application
,	O
Judgment	O
Silver	O
Sword	O
and	O
Cardinal	O
Sins	O
)	O
:	O
a	O
timer	O
is	O
set	O
to	O
count	O
up	O
with	O
every	O
enemy	O
wave	O
and	O
boss	O
encounter	O
.	O
</s>
<s>
Eschatos	B-Application
takes	O
place	O
in	O
the	O
22nd	O
century	O
where	O
a	O
mysterious	O
organic	O
alien	O
matter	O
-	O
known	O
only	O
as	O
the	O
Purple	O
Erosion	O
-	O
has	O
taken	O
over	O
The	O
Moon	O
.	O
</s>
<s>
Eschatos	B-Application
was	O
developed	O
by	O
Qute	O
.	O
</s>
<s>
On	O
release	O
,	O
Famitsu	O
magazine	O
scored	O
Eschatos	B-Application
a	O
28	O
out	O
of	O
40	O
.	O
</s>
