<s>
It	O
is	O
best	O
known	O
for	O
its	O
grand	O
strategy	O
wargame	O
series	O
Europa	B-Application
Universalis	I-Application
,	O
Hearts	B-Application
of	I-Application
Iron	I-Application
,	O
Victoria	B-Application
,	O
Crusader	B-Application
Kings	I-Application
,	O
Stellaris	B-Application
,	O
and	O
Imperator	B-Application
.	O
</s>
<s>
PDS	O
is	O
based	O
on	O
the	O
heritage	O
of	O
the	O
Swedish	O
board	O
game	O
company	O
Target	O
Games	O
,	O
and	O
has	O
been	O
a	O
game	O
developer	O
of	O
PC-focused	O
grand	O
strategy	O
games	O
since	O
1995	O
,	O
including	O
the	O
Europa	B-Application
Universalis	I-Application
,	O
Hearts	B-Application
of	I-Application
Iron	I-Application
,	O
Victoria	B-Application
,	O
Crusader	B-Application
Kings	I-Application
,	O
Stellaris	B-Application
,	O
and	O
Imperator	B-Application
series	O
.	O
</s>
<s>
While	O
this	O
left	O
Imperator	B-Application
:	I-Application
Rome	I-Application
without	O
a	O
dedicated	O
development	O
team	O
,	O
PDS	O
leads	O
stated	O
that	O
they	O
are	O
figuring	O
out	O
how	O
they	O
will	O
return	O
to	O
the	O
series	O
in	O
time	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
games	O
can	O
be	O
modded	O
with	O
as	O
little	O
as	O
a	O
text	B-Application
editor	I-Application
,	O
which	O
has	O
led	O
to	O
the	O
development	O
of	O
strong	O
modding	O
communities	O
for	O
each	O
of	O
Paradox	O
's	O
games	O
.	O
</s>
<s>
Paradox	O
developed	O
its	O
debut	O
game	O
Europa	B-Application
Universalis	I-Application
in	O
2000	O
,	O
and	O
used	O
large	O
chunks	O
of	O
its	O
code	O
for	O
its	O
next	O
games	O
.	O
</s>
<s>
Although	O
this	O
code	O
overlap	O
was	O
subsequently	O
referred	O
to	O
as	O
the	O
Europa	B-Application
Engine	I-Application
,	O
studio	O
manager	O
Johan	O
Andersson	O
clarified	O
that	O
the	O
'	O
engine	O
 '	O
had	O
not	O
been	O
part	O
of	O
the	O
initial	O
designs	O
of	O
each	O
of	O
the	O
company	O
's	O
first	O
six	O
games	O
,	O
and	O
that	O
it	O
just	O
resulted	O
from	O
copy-pasting	B-General_Concept
large	O
parts	O
of	O
code	O
from	O
one	O
game	O
to	O
the	O
next	O
.	O
</s>
<s>
In	O
April	O
2008	O
,	O
Paradox	O
allowed	O
certain	O
indie	O
game	O
developers	O
to	O
freely	O
use	O
the	O
(	O
by	O
then	O
)	O
superseded	O
engine	O
as	O
part	O
of	O
their	O
Europa	B-Application
Engine	I-Application
Licensing	O
Program	O
.	O
</s>
<s>
The	O
move	O
led	O
to	O
the	O
development	O
of	O
games	O
such	O
as	O
For	B-Application
the	I-Application
Glory	I-Application
,	O
Arsenal	B-Application
of	I-Application
Democracy	I-Application
,	O
Darkest	B-Application
Hour	I-Application
,	O
and	O
Iron	O
Cross	O
.	O
</s>
<s>
In	O
2007	O
,	O
the	O
studio	O
debuted	O
a	O
new	O
game	O
engine	O
,	O
called	O
Clausewitz	O
Engine	O
in	O
Europa	B-Application
Universalis	I-Application
III	I-Application
.	O
</s>
<s>
Sengoku	B-Application
(	O
released	O
2011	O
)	O
was	O
the	O
first	O
game	O
utilizing	O
the	O
Clausewitz	O
2	O
engine	O
.	O
</s>
<s>
The	O
studio	O
's	O
17th	O
game	O
,	O
Imperator	B-Application
:	I-Application
Rome	I-Application
(	O
released	O
2019	O
)	O
,	O
was	O
also	O
built	O
using	O
Clausewitz	O
,	O
but	O
with	O
the	O
addition	O
of	O
new	O
64-bit	O
software	O
known	O
as	O
"	O
Jomini	O
"	O
(	O
named	O
after	O
19th	O
century	O
Swiss	O
general	O
Antoine-Henri	O
Jomini	O
)	O
that	O
allows	O
for	O
better	O
3D	O
rendering	O
and	O
easier	O
creation	O
of	O
mods	O
.	O
</s>
<s>
Note	O
that	O
in	O
addition	O
to	O
this	O
list	O
there	O
are	O
two	O
other	O
games	O
developed	O
in	O
the	O
early	O
2000s	O
when	O
the	O
studio	O
was	O
part	O
of	O
Paradox	O
Entertainment	O
,	O
Crown	B-Application
of	I-Application
the	I-Application
North	I-Application
and	O
Two	B-Application
Thrones	I-Application
,	O
both	O
part	O
of	O
the	O
Svea	O
Rike	O
series	O
.	O
</s>
