<s>
Text	B-Application
Adventure	I-Application
Development	I-Application
System	I-Application
(	O
TADS	B-Application
)	O
is	O
a	O
prototype-based	B-Application
domain-specific	B-Language
programming	I-Language
language	I-Language
and	O
set	O
of	O
standard	B-Library
libraries	I-Library
for	O
creating	O
interactive	O
fiction	O
(	O
IF	O
)	O
games	O
.	O
</s>
<s>
The	O
original	O
TADS	B-Application
1	O
was	O
released	O
by	O
High	O
Energy	O
Software	O
as	O
shareware	B-License
in	O
1988	O
,	O
and	O
was	O
followed	O
by	O
TADS	B-Application
2	O
not	O
long	O
after	O
.	O
</s>
<s>
From	O
the	O
late	O
1980s	O
to	O
early	O
1990s	O
,	O
free	O
development	O
tools	O
such	O
as	O
TADS	B-Application
and	O
Inform	O
enabled	O
amateur	O
communities	O
to	O
create	O
interactive	O
fiction	O
.	O
</s>
<s>
In	O
the	O
mid-1990s	O
,	O
TADS	B-Application
was	O
a	O
top	O
development	O
tool	O
for	O
interactive	O
fiction	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
it	O
was	O
a	O
more	O
improved	O
tool	O
for	O
parsing	B-Language
and	O
world	O
building	O
than	O
existing	O
systems	O
like	O
AGT	O
(	O
Adventure	B-Application
Game	I-Application
Toolkit	I-Application
)	O
.	O
</s>
<s>
TADS	B-Application
2	O
syntax	O
is	O
based	O
on	O
C	B-Language
,	O
with	O
bits	O
of	O
Pascal	B-Application
.	O
</s>
<s>
TADS	B-Application
2	O
has	O
been	O
maintained	O
and	O
updated	O
at	O
regular	O
intervals	O
by	O
its	O
creator	O
,	O
Michael	O
J	O
.	O
Roberts	O
,	O
even	O
after	O
it	O
became	O
freeware	B-License
in	O
July	O
1996	O
.	O
</s>
<s>
Graham	O
Nelson	O
,	O
creator	O
of	O
Inform	O
,	O
describes	O
Inform	O
and	O
TADS	B-Application
as	O
the	O
"	O
only	O
two	O
systems	O
...	O
widely	O
used	O
"	O
in	O
the	O
last	O
half	O
of	O
the	O
1990s	O
,	O
and	O
TADS	B-Application
has	O
been	O
called	O
"	O
The	O
second	O
most	O
commonly	O
used	O
IF	O
programming	O
language	O
today	O
"	O
.	O
</s>
<s>
Multimedia	O
TADS	B-Application
,	O
introduced	O
in	O
1998	O
,	O
allows	O
games	O
to	O
display	O
graphics	O
,	O
animation	O
and	O
play	O
sounds	O
,	O
if	O
the	O
platform	O
supports	O
it	O
.	O
</s>
<s>
In	O
2006	O
,	O
TADS	B-Application
received	O
a	O
major	O
overhaul	O
with	O
the	O
release	O
of	O
TADS	B-Application
3	I-Application
,	O
which	O
is	O
a	O
complete	O
rewrite	O
of	O
the	O
TADS	B-Application
engine	O
,	O
only	O
retaining	O
the	O
platform-dependent	O
code	O
to	O
ease	O
porting	O
.	O
</s>
<s>
TADS	B-Application
3	I-Application
uses	O
a	O
language	O
with	O
a	O
syntax	O
that	O
resembles	O
C++	B-Language
and	O
Java	B-Language
.	O
</s>
<s>
It	O
has	O
many	O
new	O
features	O
,	O
such	O
as	O
efficient	O
dynamic	O
objects	O
(	O
with	O
automatic	B-General_Concept
garbage	I-General_Concept
collection	I-General_Concept
)	O
,	O
structured	O
exceptions	B-General_Concept
,	O
native	O
UTF-8	O
strings	O
,	O
and	O
many	O
useful	O
function	O
classes	O
.	O
</s>
<s>
The	O
TADS	B-Application
3	I-Application
compiler	B-Language
and	O
interpreter	B-Application
have	O
been	O
ported	O
to	O
the	O
DOS	B-Device
,	O
Macintosh	B-Device
and	O
Unix	B-Application
platforms	B-Device
.	O
</s>
<s>
Several	O
TADS	B-Application
3	I-Application
games	O
have	O
been	O
released	O
.	O
</s>
<s>
Games	O
written	O
in	O
TADS	B-Application
are	O
compiled	B-Language
to	O
a	O
platform-independent	O
format	O
that	O
can	O
be	O
played	O
on	O
any	O
computer	O
for	O
which	O
a	O
suitable	O
virtual	B-Architecture
machine	I-Architecture
(	O
VM	O
)	O
exists	O
.	O
</s>
<s>
Such	O
virtual	B-Architecture
machines	I-Architecture
exist	O
for	O
several	O
platforms	B-Device
,	O
and	O
in	O
this	O
respect	O
,	O
TADS	B-Application
closely	O
follows	O
the	O
example	O
of	O
the	O
original	O
Infocom	O
Z-machine	O
,	O
as	O
well	O
as	O
modern	O
languages	O
such	O
as	O
Java	B-Language
and	O
C#	B-Application
.	O
</s>
<s>
Whereas	O
the	O
TADS	B-Application
1	O
and	O
2	O
VMs	O
had	O
to	O
parse	B-Language
the	O
commands	O
entered	O
by	O
the	O
player	O
,	O
before	O
sending	O
the	O
results	O
on	O
to	O
the	O
game	O
,	O
TADS	B-Application
3	I-Application
employs	O
a	O
more	O
general-purpose	O
virtual	B-Architecture
machine	I-Architecture
,	O
where	O
the	O
command-parsing	O
is	O
done	O
by	O
the	O
game	O
code	O
itself	O
,	O
akin	O
to	O
Inform	O
.	O
</s>
<s>
Uncle	B-Application
Zebulon	I-Application
's	I-Application
Will	I-Application
,	O
by	O
Magnus	O
Olsson	O
(	O
1995	O
)	O
.	O
</s>
<s>
It	O
won	O
the	O
TADS	B-Application
category	O
at	O
the	O
inaugural	O
1995	O
Interactive	O
Fiction	O
Competition	O
and	O
was	O
included	O
on	O
Activision	O
's	O
1996	O
commercial	O
release	O
of	O
Classic	B-Application
Text	I-Application
Adventure	I-Application
Masterpieces	I-Application
of	I-Application
Infocom	I-Application
.	O
</s>
<s>
Kaged	B-Application
by	O
Ian	O
Finley	O
(	O
2000	O
)	O
.	O
</s>
<s>
1893	B-Application
:	I-Application
A	I-Application
World	I-Application
's	I-Application
Fair	I-Application
Mystery	I-Application
by	O
Peter	O
Nepstad	O
(	O
2002	O
)	O
.	O
</s>
