<s>
TinyMUCK	B-Application
or	O
,	O
more	O
broadly	O
,	O
a	O
MUCK	B-Application
,	O
is	O
a	O
type	O
of	O
user-extendable	O
online	B-Application
text-based	I-Application
role-playing	I-Application
game	I-Application
,	O
designed	O
for	O
role	O
playing	O
and	O
social	O
interaction	O
.	O
</s>
<s>
Backronyms	O
like	O
"	O
Multi-User	O
Chat/Created/Computer/Character/Carnal	O
Kingdom	O
"	O
and	O
"	O
Multi-User	O
Construction	O
Kit	O
"	O
are	O
sometimes	O
cited	O
,	O
but	O
are	O
not	O
the	O
actual	O
origin	O
of	O
the	O
term	O
;	O
"	O
muck	B-Application
"	O
is	O
simply	O
a	O
play	O
on	O
the	O
term	O
MUD	B-Application
.	O
</s>
<s>
The	O
original	O
TinyMUCK	B-Application
1.0	O
server	O
was	O
written	O
by	O
Stephen	O
White	O
from	O
University	O
of	O
Waterloo	O
in	O
winter	O
of	O
1990	O
,	O
based	O
on	O
TinyMUD	O
1.5.2	O
codebase	O
.	O
</s>
<s>
TinyMUCK	B-Application
2.0	O
was	O
released	O
in	O
June	O
1990	O
by	O
Piaw	O
"	O
Lachesis	O
"	O
Na	O
from	O
Berkeley	O
,	O
who	O
added	O
the	O
programming	O
language	O
MUF	O
for	O
in-game	O
server	O
extensions	O
.	O
</s>
<s>
TinyMUCK	B-Application
2.1	O
and	O
2.2	O
were	O
released	O
in	O
July	O
1990	O
and	O
April	O
1991	O
by	O
Robert	O
"	O
ChupChup	O
"	O
Earl	O
of	O
San	O
Diego	O
,	O
California	O
.	O
</s>
<s>
FuzzBall	B-Application
MUCK	I-Application
server	O
was	O
built	O
on	O
TinyMUCK	B-Application
2.2	O
codebase	O
by	O
and	O
,	O
as	O
of	O
version	O
5	O
,	O
released	O
in	O
1995	O
,	O
includes	O
the	O
alternative	O
programming	O
language	O
MPI	O
.	O
</s>
<s>
MUCKs	B-Application
are	O
extensible	O
by	O
design	O
,	O
players	O
can	O
create	O
and	O
modify	O
(	O
"	O
build	O
"	O
)	O
all	O
internal	O
objects	O
of	O
the	O
game	O
environment	O
,	O
including	O
rooms	O
,	O
exits	O
,	O
and	O
even	O
the	O
system	O
commands	O
,	O
for	O
which	O
the	O
MUCKs	B-Application
use	O
the	O
MUF	O
(	O
Multi-User	O
Forth	B-Application
)	O
language	O
.	O
</s>
<s>
Fuzzball	B-Application
MUCKs	I-Application
also	O
use	O
Message	O
Parsing	O
Interpreter	O
(	O
MPI	O
)	O
which	O
can	O
be	O
used	O
to	O
embed	O
executable	O
code	O
into	O
descriptions	O
of	O
all	O
in-game	O
objects	O
.	O
</s>
<s>
Unlike	O
many	O
other	O
virtual	O
worlds	O
,	O
however	O
,	O
TinyMUCK	B-Application
and	O
its	O
descendants	O
do	O
not	O
usually	O
have	O
computer-controlled	O
monsters	O
for	O
players	O
to	O
kill	O
.	O
</s>
<s>
TinyMUCKs	B-Application
are	O
popular	O
among	O
members	O
of	O
furry	O
fandom	O
;	O
examples	O
of	O
active	O
,	O
large	O
TinyMUCKs	B-Application
include	O
FurryMUCK	O
and	O
Tapestries	O
MUCK	B-Application
,	O
both	O
of	O
which	O
run	O
the	O
Fuzzball	O
version	O
of	O
MUCK	B-Application
server	O
code	O
.	O
</s>
