<s>
Ziggurat	B-Application
is	O
a	O
first-person	O
shooter	O
dungeon	O
crawl	O
video	O
game	O
developed	O
and	O
published	O
by	O
Milkstone	O
Studios	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
Linux	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
OS	B-Operating_System
X	I-Operating_System
in	O
October	O
2014	O
after	O
being	O
available	O
for	O
two	O
months	O
in	O
early	O
access	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
the	B-Device
Xbox	I-Device
One	I-Device
in	O
March	O
2015	O
,	O
and	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
in	O
April	O
2015	O
.	O
</s>
<s>
The	O
game	O
is	O
inspired	O
by	O
Heretic	B-Application
and	O
Hexen	B-Application
:	I-Application
Beyond	I-Application
Heretic	I-Application
.	O
</s>
<s>
A	O
sequel	O
,	O
titled	O
Ziggurat	B-Application
2	O
,	O
was	O
released	O
on	O
October	O
28	O
,	O
2021	O
.	O
</s>
<s>
Ziggurat	B-Application
is	O
a	O
first-person	O
shooter	O
dungeon	O
crawl	O
video	O
game	O
with	O
roguelike	O
elements	O
.	O
</s>
<s>
Ziggurat	B-Application
was	O
developed	O
by	O
indie	O
video	O
game	O
developer	O
Milkstone	O
Studios	O
.	O
</s>
<s>
The	O
game	O
was	O
initially	O
released	O
in	O
early	O
access	O
on	O
Steam	B-Application
for	O
Linux	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
OS	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
On	O
20	O
March	O
2015	O
,	O
the	O
game	O
was	O
released	O
for	O
the	B-Device
Xbox	I-Device
One	I-Device
through	O
the	O
ID	B-Device
@Xbox	I-Device
program	O
.	O
</s>
<s>
A	O
PlayStation	B-Operating_System
4	I-Operating_System
version	O
was	O
released	O
in	O
North	O
America	O
on	O
21	O
April	O
2015	O
,	O
and	O
Europe	O
on	O
22	O
April	O
2015	O
.	O
</s>
<s>
Ziggurat	B-Application
received	O
generally	O
positive	O
reviews	O
from	O
critics	O
upon	O
release	O
.	O
</s>
<s>
Aggregate	O
review	O
website	O
Metacritic	O
assigned	O
scores	O
of	O
76/100	O
for	O
the	O
PC	O
and	O
Xbox	B-Device
One	I-Device
versions	O
,	O
and	O
79/100	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
.	O
</s>
<s>
Some	O
critics	O
likened	O
the	O
game	O
to	O
Raven	O
Software	O
's	O
shooters	O
Heretic	B-Application
and	O
Hexen	B-Application
:	I-Application
Beyond	I-Application
Heretic	I-Application
.	O
</s>
<s>
Ziggurat	B-Application
2	O
was	O
released	O
on	O
October	O
22	O
,	O
2020	O
,	O
as	O
a	O
Steam	B-Application
Early	O
Access	O
game	O
and	O
has	O
received	O
a	O
number	O
of	O
updates	O
since	O
,	O
and	O
was	O
released	O
fully	O
on	O
October	O
28	O
,	O
2021	O
.	O
</s>
<s>
The	O
title	O
was	O
released	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
PlayStation	B-Device
5	I-Device
on	O
February	O
3	O
,	O
2022	O
,	O
Nintendo	B-Application
Switch	I-Application
on	O
February	O
7	O
,	O
2022	O
,	O
and	O
for	O
Xbox	B-Device
One	I-Device
and	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
on	O
February	O
11	O
,	O
2022	O
.	O
</s>
