<s>
Grendel	B-Application
's	I-Application
Cave	I-Application
is	O
a	O
real-time	O
browser-based	O
role-playing	O
video	O
game	O
and	O
MUD	B-Application
from	O
Grendel	O
Enterprises	O
.	O
</s>
<s>
The	O
basis	O
for	O
Grendel	O
’s	O
Cave	O
was	O
Anglo-Saxon	O
mythology	O
and	O
Beowulf	B-Operating_System
,	O
and	O
it	O
is	O
set	O
in	O
the	O
historical	O
medieval	O
period	O
.	O
</s>
<s>
Scholars	O
consider	O
it	O
an	O
artistic	O
depiction	O
of	O
Grendel	O
and	O
the	O
poem	O
,	O
Beowulf	B-Operating_System
,	O
as	O
well	O
as	O
a	O
modern	O
adaptation	O
and	O
a	O
derivative	O
work	O
of	O
the	O
epic	O
.	O
</s>
<s>
Educational	O
websites	O
use	O
Grendel	B-Application
's	I-Application
Cave	I-Application
as	O
an	O
Internet	O
learning	O
aid	O
for	O
medieval	O
literature	O
and	O
they	O
considered	O
it	O
an	O
online	O
Beowulf	B-Operating_System
resource	O
.	O
</s>
<s>
Grendel	B-Application
's	I-Application
Cave	I-Application
was	O
an	O
online	O
Beowulf	B-Operating_System
resource	O
that	O
goes	O
beyond	O
the	O
written	O
text	O
by	O
allowing	O
players	O
to	O
participate	O
in	O
the	O
story	O
.	O
</s>
<s>
Scholars	O
consider	O
it	O
a	O
modern	O
adaptation	O
of	O
the	O
original	O
Beowulf	B-Operating_System
poem	O
.	O
</s>
<s>
Glenco	O
McGraw-Hill	O
uses	O
the	O
site	O
as	O
part	O
of	O
their	O
Study	O
Guide	O
for	O
Beowulf	B-Operating_System
.	O
</s>
<s>
Educational	O
websites	O
use	O
Grendel	B-Application
's	I-Application
Cave	I-Application
as	O
an	O
online	O
reference	O
for	O
medieval	O
literature	O
.	O
</s>
<s>
Mars	O
Software	O
Products	O
wrote	O
the	O
first	O
version	O
of	O
Grendel	B-Application
's	I-Application
Cave	I-Application
in	O
1981	O
as	O
a	O
single-player	O
video	O
game	O
for	O
the	O
SWTPC	B-Device
6800	I-Device
microcomputer	B-Architecture
.	O
</s>
<s>
Grendel	O
's	O
Net	O
conducted	O
their	O
development	O
as	O
an	O
experiment	O
in	O
Classic	B-General_Concept
ASP	I-General_Concept
and	O
Microsoft	B-Application
SQL	I-Application
6.0	O
programming	O
for	O
the	O
World	O
Wide	O
Web	O
.	O
</s>
<s>
Grendel	O
Enterprises	O
 '	O
programmers	O
found	O
the	O
original	O
Grendel	B-Application
's	I-Application
Cave	I-Application
source	O
code	O
on	O
an	O
old	O
database	B-Application
server	I-Application
in	O
an	O
office	O
closet	O
.	O
</s>
<s>
Soon	O
after	O
,	O
they	O
started	O
work	O
on	O
Grendel	B-Application
's	I-Application
Cave	I-Application
v2.0	O
.	O
</s>
<s>
Version	O
2.0	O
contained	O
many	O
aspects	O
of	O
the	O
original	O
Grendel	B-Application
's	I-Application
Cave	I-Application
with	O
the	O
addition	O
of	O
many	O
Norse	O
mythological	O
elements	O
and	O
NPCs	O
.	O
</s>
<s>
Version	O
3.0	O
added	O
text	O
only	O
and	O
MUD	B-Application
style	O
user	O
interfaces	O
,	O
TTS-enabling	O
the	O
game	O
.	O
</s>
<s>
Gameplay	O
involves	O
creating	O
Thanes	O
,	O
the	O
player	O
characters	O
in	O
the	O
game	O
,	O
killing	O
monsters	B-Application
,	O
primarily	O
found	O
in	O
Grendel	B-Application
's	I-Application
Cave	I-Application
,	O
increasing	O
value	O
and	O
stats	O
and	O
collecting	O
items	O
.	O
</s>
<s>
They	O
gain	O
magical	O
abilities	O
by	O
visiting	O
the	O
Witch	B-Device
or	O
through	O
acquired	O
items	O
.	O
</s>
<s>
Ultimately	O
,	O
this	O
leads	O
players	O
to	O
complete	O
quests	O
and	O
earn	O
amulets	O
,	O
by	O
traveling	O
to	O
other	O
worlds	O
,	O
and	O
trading	O
in	O
those	O
earned	O
amulets	O
for	O
the	O
Yggdrasil	B-Application
amulet	O
and	O
thus	O
gaining	O
the	O
ability	O
to	O
kill	O
Grendel	O
.	O
</s>
<s>
The	O
basis	O
for	O
Grendel	B-Application
's	I-Application
Cave	I-Application
is	O
the	O
Anglo-Saxon	O
poem	O
,	O
Beowulf	B-Operating_System
.	O
</s>
<s>
Grendel	O
is	O
an	O
AI	B-General_Concept
monster	B-Application
,	O
who	O
performs	O
many	O
tasks	O
,	O
most	O
of	O
them	O
nasty	O
,	O
involving	O
killing	O
or	O
harassing	O
Thanes	O
in	O
the	O
game	O
.	O
</s>
<s>
Thanes	O
can	O
take	O
on	O
other	O
than	O
human	O
characteristics	O
,	O
including	O
Valkyrie	O
,	O
Berserkers	O
,	O
Tricksters	B-Protocol
,	O
and	O
Shape-Shifters	O
,	O
among	O
others	O
.	O
</s>
