<s>
TIS-100	B-Application
is	O
a	O
programming/puzzle	O
video	O
game	O
developed	O
by	O
Zachtronics	O
Industries	O
.	O
</s>
<s>
The	O
game	O
has	O
the	O
player	O
develop	O
mock	O
assembly	B-Language
language	I-Language
code	O
to	O
perform	O
certain	O
tasks	O
on	O
a	O
fictional	O
,	O
virtualized	O
1970s	O
computer	O
that	O
has	O
been	O
corrupted	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
OS	B-Operating_System
X	I-Operating_System
,	O
and	O
Linux	B-Application
personal	O
computers	O
in	O
July	O
2015	O
.	O
</s>
<s>
Within	O
TIS-100	B-Application
,	O
the	O
player	O
is	O
said	O
to	O
have	O
come	O
across	O
a	O
malfunctioning	O
TIS-100	B-Application
computer	O
(	O
"	O
Tessellated	O
Intelligence	O
System	O
"	O
)	O
and	O
its	O
manual	O
,	O
based	O
on	O
early	O
computers	O
of	O
the	O
1980s	O
.	O
</s>
<s>
Each	O
node	O
has	O
a	O
single	O
processor	B-General_Concept
register	I-General_Concept
to	O
store	O
a	O
numerical	O
value	O
as	O
well	O
as	O
a	O
backup	O
register	O
.	O
</s>
<s>
Nodes	O
also	O
hold	O
their	O
own	O
assembly	B-Language
language	I-Language
program	O
as	O
entered	O
by	O
the	O
user	O
.	O
</s>
<s>
The	O
assembly	B-Language
language	I-Language
,	O
a	O
simplified	O
version	O
of	O
real-world	O
assembly	B-Language
languages	I-Language
,	O
allows	O
the	O
node	O
to	O
accept	O
external	O
input	O
or	O
a	O
numerical	O
value	O
sent	O
from	O
an	O
adjacent	O
node	O
,	O
perform	O
basic	O
math	O
and	O
logic	O
operations	O
,	O
store	O
and	O
backup	O
the	O
current	O
data	O
value	O
,	O
and	O
then	O
send	O
results	O
to	O
an	O
adjacent	O
node	O
or	O
to	O
the	O
program	O
's	O
output	O
.	O
</s>
<s>
Later	O
puzzles	O
introduce	O
stack	B-Application
nodes	O
and	O
an	O
output	O
to	O
a	O
simple	O
5-color	O
graphics	O
display	O
.	O
</s>
<s>
As	O
with	O
previous	O
Zachtronics	O
games	O
such	O
as	O
SpaceChem	B-Application
and	O
Infinifactory	B-Application
,	O
once	O
the	O
player	O
completes	O
a	O
puzzle	O
,	O
their	O
solution	O
is	O
compared	O
to	O
other	O
players	O
through	O
online	O
leaderboards	O
.	O
</s>
<s>
The	O
player	O
is	O
ranked	O
based	O
on	O
the	O
number	O
of	O
nodes	O
used	O
,	O
the	O
number	O
of	O
instructions	O
within	O
their	O
code	O
,	O
and	O
the	O
number	O
of	O
instruction	B-General_Concept
cycles	I-General_Concept
used	O
.	O
</s>
<s>
A	O
TIS-100	B-Application
"	O
machine	O
"	O
is	O
made	O
up	O
of	O
12	O
interconnected	O
nodes	O
on	O
a	O
grid	O
,	O
either	O
a	O
compute	O
node	O
or	O
a	O
stack	B-Application
memory	O
module	O
.	O
</s>
<s>
Each	O
TIS-100	B-Application
compute	O
node	O
has	O
two	O
registers	O
called	O
ACC	O
and	O
BAK	O
.	O
</s>
<s>
The	O
game	O
also	O
includes	O
undocumented	O
instructions	O
,	O
with	O
HCF	B-Language
(	O
reboot	O
game	O
)	O
being	O
the	O
first	O
known	O
undocumented	O
instruction	O
.	O
</s>
<s>
The	O
TIS-100	B-Application
architecture	O
has	O
also	O
been	O
implemented	O
outside	O
of	O
the	O
game	O
in	O
an	O
emulator	O
,	O
intended	O
to	O
be	O
used	O
as	O
an	O
esoteric	O
programming	B-Language
language	O
.	O
</s>
<s>
TIS-100	B-Application
was	O
based	O
on	O
an	O
idea	O
that	O
Zach	O
Barth	O
,	O
the	O
founder	O
and	O
lead	O
game	O
designer	O
of	O
Zachtronics	O
,	O
had	O
years	O
prior	O
.	O
</s>
<s>
The	O
concept	O
was	O
named	O
The	O
Second	O
Golden	O
Age	O
,	O
which	O
was	O
set	O
in	O
the	O
Middle	O
East	O
sometime	O
in	O
the	O
near	O
future	O
,	O
in	O
which	O
the	O
player	O
would	O
program	O
nanobots	O
to	O
be	O
injected	O
into	O
the	O
player-character	O
'	O
s	O
blood	O
as	O
to	O
be	O
able	O
to	O
solve	O
various	O
types	O
puzzles	O
akin	O
to	O
Myst	B-Application
.	O
</s>
<s>
One	O
aspect	O
would	O
be	O
the	O
player-character	O
coming	O
across	O
a	O
used	O
electronics	O
store	O
and	O
finding	O
an	O
old	O
computer	O
with	O
corrupted	O
areas	O
,	O
which	O
as	O
they	O
worked	O
to	O
clear	O
up	O
,	O
would	O
discover	O
these	O
corrupted	O
areas	O
contained	O
the	O
core	O
of	O
an	O
artificial	B-Application
intelligence	I-Application
.	I-Application
</s>
<s>
While	O
developing	O
Infinifactory	B-Application
,	O
Barth	O
wanted	O
to	O
try	O
to	O
start	O
work	O
on	O
The	O
Second	O
Golden	O
Age	O
but	O
found	O
the	O
effort	O
,	O
concurrent	O
with	O
Infinifactory	B-Application
,	O
was	O
far	O
too	O
difficult	O
.	O
</s>
<s>
TIS-100	B-Application
was	O
released	O
into	O
Steam	O
Early	O
Access	O
on	O
June	O
1	O
,	O
2015	O
.	O
</s>
<s>
Barth	O
stated	O
that	O
he	O
took	O
a	O
similar	O
approach	O
to	O
Early	O
Access	O
as	O
with	O
Infinifactory	B-Application
,	O
providing	O
a	O
game	O
that	O
was	O
nearly	O
complete	O
to	O
gain	O
suggestions	O
and	O
improvements	O
and	O
the	O
ability	O
to	O
add	O
more	O
content	O
before	O
releasing	O
the	O
final	O
product	O
.	O
</s>
<s>
In	O
its	O
article	O
"	O
Can	O
Videogames	O
Teach	O
You	O
Programming	B-Language
"	O
,	O
Rock	O
Paper	O
Shotgun	O
called	O
the	O
game	O
's	O
technology	O
"	O
relevant	O
"	O
and	O
said	O
"	O
if	O
you	O
can	O
survive	O
its	O
stiff	O
challenge	O
,	O
you	O
’re	O
ready	O
to	O
code	O
"	O
.	O
</s>
