<s>
Anno	O
1701	O
,	O
also	O
marketed	O
as	O
1701	O
A.D.	O
,	O
is	O
a	O
real-time	O
strategy	O
and	O
city	B-Application
building	I-Application
video	O
game	O
,	O
part	O
of	O
the	O
Anno	O
series	O
.	O
</s>
<s>
It	O
is	O
the	O
sequel	O
to	O
Anno	B-Application
1602	I-Application
and	O
Anno	B-Application
1503	I-Application
and	O
was	O
followed	O
by	O
Anno	B-Application
1404	I-Application
.	O
</s>
<s>
Related	O
Designs	O
instead	O
focused	O
their	O
efforts	O
on	O
a	O
sequel	O
to	O
Anno	B-Application
1503	I-Application
.	O
</s>
<s>
Due	O
to	O
a	O
dispute	O
between	O
Sunflowers	O
and	O
the	O
developer	O
of	O
the	O
first	O
Anno	O
games	O
,	O
Max	O
Design	O
,	O
Related	O
Designs	O
was	O
not	O
able	O
to	O
access	O
the	O
program	O
code	O
for	O
Anno	B-Application
1503	I-Application
,	O
and	O
thus	O
had	O
no	O
technical	O
basis	O
.	O
</s>
<s>
The	O
focus	O
of	O
the	O
presentation	O
was	O
on	O
the	O
new	O
3D	O
graphics	O
,	O
partly	O
based	O
on	O
an	O
earlier	O
title	O
of	O
Related	O
Designs	O
,	O
No	B-Application
Man	I-Application
's	I-Application
Land	I-Application
,	O
with	O
which	O
the	O
game	O
separated	O
itself	O
from	O
its	O
predecessors	O
.	O
</s>
<s>
The	O
game	O
was	O
presented	O
along	O
with	O
ParaWorld	B-Application
on	O
the	O
Sunflowers	O
 '	O
booth	O
at	O
E3	O
2006	O
.	O
</s>
<s>
As	O
Anno	B-Application
1602	I-Application
and	O
Anno	B-Application
1503	I-Application
had	O
been	O
commercial	O
hits	O
,	O
together	O
totaling	O
4.5	O
million	O
units	O
sold	O
worldwide	O
,	O
pre-release	O
sales	O
estimates	O
for	O
Anno	O
1701	O
were	O
high	O
.	O
</s>
<s>
This	O
placed	O
it	O
second	O
for	O
2006	O
,	O
behind	O
World	B-Protocol
of	I-Protocol
Warcraft	I-Protocol
at	O
345,000	O
units	O
.	O
</s>
<s>
In	O
March	O
2007	O
,	O
Sunflowers	O
released	O
an	O
add-on	O
called	O
Anno	B-Application
1701	I-Application
:	I-Application
The	I-Application
Sunken	I-Application
Dragon	I-Application
.	O
</s>
