<s>
Thinking	B-Application
with	I-Application
Time	I-Application
Machine	I-Application
is	O
a	O
single-player	O
mod	O
for	O
Portal	B-Application
2	I-Application
developed	O
by	O
Stridemann	O
,	O
and	O
released	O
by	O
SignHead	O
Studio	O
.	O
</s>
<s>
It	O
was	O
initially	O
released	O
to	O
Steam	B-Application
in	O
April	O
2014	O
,	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
OS	B-Application
X	I-Application
systems	O
,	O
available	O
freely	O
to	O
existing	O
owners	O
of	O
Portal	B-Application
2	I-Application
.	O
</s>
<s>
In	O
Thinking	B-Application
with	I-Application
Time	I-Application
Machine	I-Application
,	O
the	O
player	O
controls	O
Chell	O
,	O
the	O
protagonist	O
of	O
the	O
official	O
Portal	B-Application
games	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
series	O
 '	O
"	O
portal	B-Application
gun	O
"	O
,	O
it	O
also	O
gives	O
the	O
player	O
a	O
tablet-like	O
"	O
time	B-Operating_System
machine	I-Operating_System
"	O
,	O
allowing	O
them	O
to	O
record	O
their	O
movements	O
,	O
and	O
summon	O
a	O
double	O
who	O
performs	O
those	O
motions	O
.	O
</s>
<s>
Release	O
and	O
reception	O
Thinking	B-Application
with	I-Application
Time	I-Application
Machine	I-Application
was	O
released	O
for	O
free	O
to	O
existing	O
owners	O
of	O
Portal	B-Application
2	I-Application
via	O
Steam	B-Application
on	O
18	O
April	O
2014	O
by	O
developer	O
Stridemann	O
and	O
publisher	O
SignHead	O
Studio	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
the	O
top	O
200	O
Steam	B-Application
games	I-Application
in	O
the	O
year	O
of	O
its	O
release	O
.	O
</s>
<s>
Alice	O
O'Connor	O
of	O
Rock	O
,	O
Paper	O
,	O
Shotgun	O
positive	O
in	O
a	O
positive	O
2014	O
review	O
"	O
for	O
those	O
lacking	O
in	O
some	O
of	O
the	O
social	O
niceties	O
,	O
it	O
’s	O
perhaps	O
the	O
closest	O
we	O
’ll	O
get	O
to	O
playing	O
Portal	B-Application
2	I-Application
co-op.	O
”	O
PC	O
Gamer''	O
reviewer	O
Christopher	O
Livingston	O
similarly	O
praised	O
the	O
mod	O
,	O
stating	O
that	O
"	O
working	O
with	O
your	O
past	O
self	O
will	O
seem	O
almost	O
as	O
natural	O
as	O
working	O
with	O
a	O
co-op	O
partner	O
"	O
.	O
</s>
<s>
Additionally	O
,	O
both	O
Moore	O
and	O
Livingston	O
criticised	O
the	O
mod	O
for	O
not	O
featuring	O
enough	O
portal-based	O
puzzles	O
,	O
especially	O
in	O
initial	O
levels	O
.	O
</s>
