<s>
Global	B-Application
Diplomacy	I-Application
(	O
GD	O
)	O
and	O
Age	O
of	O
Discovery	O
(	O
AoD	O
)	O
are	O
two	O
variants	O
of	O
a	O
play-by-email	O
wargames	O
run	O
by	O
Email	O
Games	O
.	O
</s>
<s>
The	O
games	O
simulate	O
strategic-level	B-Application
warfare	O
and	O
diplomacy	O
at	O
a	O
late-19th	O
century	O
(	O
c	O
.	O
1880	O
)	O
technology	O
level	O
.	O
</s>
<s>
Whereas	O
Global	B-Application
Diplomacy	I-Application
(	O
and	O
its	O
sequel	O
Global	B-Application
Diplomacy	I-Application
2	I-Application
)	O
attempt	O
to	O
simulate	O
a	O
world	O
war	O
,	O
on	O
Earth	O
during	O
the	O
era	O
of	O
New	O
Imperialism	O
,	O
Age	O
of	O
Discovery	O
uses	O
a	O
randomly	O
created	O
map	O
and	O
world	O
.	O
</s>
