<s>
Spewer	B-Operating_System
is	O
a	O
2009	O
browser-based	B-Protocol
puzzle-platform	O
game	O
.	O
</s>
<s>
Taking	O
the	O
role	O
of	O
a	O
mysterious	O
test	O
subject	O
,	O
code	O
named	O
"	O
Spewer	B-Operating_System
"	O
,	O
the	O
player	O
must	O
vomit	O
their	O
way	O
through	O
over	O
60	O
levels	O
while	O
learning	O
new	O
abilities	O
,	O
changing	O
forms	O
and	O
piecing	O
together	O
their	O
purpose	O
in	O
the	O
game	O
.	O
</s>
<s>
It	O
is	O
also	O
a	O
part	O
of	O
The	B-Operating_System
Basement	I-Operating_System
Collection	I-Operating_System
.	O
</s>
<s>
The	O
player	O
navigates	O
through	O
five	O
chapters	O
and	O
a	O
bonus	O
chapter	O
as	O
Spewer	B-Operating_System
,	O
a	O
small	O
creature	O
that	O
navigates	O
through	O
single-screen	O
levels	O
by	O
utilizing	O
its	O
own	O
vomit	O
as	O
a	O
platform	O
.	O
</s>
<s>
Spewer	B-Operating_System
can	O
also	O
walk	O
,	O
jump	O
,	O
and	O
swim	O
.	O
</s>
<s>
The	O
amount	O
of	O
vomit	O
available	O
to	O
the	O
player	O
is	O
represented	O
by	O
a	O
meter	O
,	O
which	O
can	O
be	O
replaced	O
by	O
Spewer	B-Operating_System
eating	O
food	O
or	O
its	O
own	O
vomit	O
.	O
</s>
<s>
Spewer	B-Operating_System
was	O
developed	O
by	O
Edmund	O
McMillen	O
and	O
Eli	O
Piilonen	O
and	O
released	O
on	O
Newgrounds	B-Operating_System
on	O
May	O
4	O
,	O
2009	O
.	O
</s>
<s>
A	O
group	O
of	O
four	O
people	O
developed	O
Spewer	B-Operating_System
:	O
Edmund	O
McMillen	O
created	O
the	O
art	O
assets	O
for	O
the	O
game	O
,	O
and	O
Eli	O
Piilonen	O
was	O
the	O
programmer	O
.	O
</s>
<s>
Macintosh	B-Device
gaming	O
magazine	O
MacLife	O
's	O
Arvind	O
Srinivasan	O
described	O
the	O
game	O
as	O
"	O
incredibly	O
addictive	O
"	O
,	O
stating	O
that	O
the	O
game	O
managed	O
to	O
hold	O
his	O
attention	O
during	O
the	O
full	O
60	O
levels	O
,	O
Spewer	B-Operating_System
was	O
awarded	O
the	O
magazine	O
's	O
Editors	O
 '	O
Choice	O
award	O
.	O
</s>
