<s>
Nival	O
Interactive	O
developed	O
a	O
proprietary	O
game	O
engine	O
for	O
its	O
turn-based	B-Application
tactics	I-Application
video	O
game	O
Silent	B-Application
Storm	I-Application
.	O
</s>
<s>
The	O
engine	O
was	O
reused	O
for	O
Silent	B-Application
Storm	I-Application
:	I-Application
Sentinels	I-Application
,	O
Night	B-Application
Watch	I-Application
,	O
Hammer	B-Language
&	I-Language
Sickle	I-Language
and	O
Day	B-Language
Watch	I-Language
.	O
</s>
<s>
A	O
modified	O
version	O
of	O
this	O
engine	O
was	O
used	O
for	O
Heroes	B-Application
of	I-Application
Might	I-Application
and	I-Application
Magic	I-Application
V	I-Application
.	O
Akella	O
used	O
the	O
engine	O
for	O
Jagged	B-Application
Alliance	I-Application
3	I-Application
in	O
2007	O
before	O
that	O
version	O
of	O
the	O
game	O
was	O
cancelled	O
in	O
2010	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Silent	B-Application
Storm	I-Application
:	I-Application
Sentinels	I-Application
,	O
introduced	O
weapon	O
degradation	O
to	O
the	O
series	O
.	O
</s>
<s>
Finally	O
,	O
the	O
engine	O
has	O
been	O
criticized	O
for	O
the	O
length	O
of	O
time	O
required	O
for	O
the	B-Application
artificial	I-Application
intelligence	I-Application
to	O
complete	O
its	O
turns	O
,	O
a	O
lack	O
of	O
any	O
multiplayer	O
support	O
and	O
the	O
uncooperativeness	O
of	O
its	O
camera	O
controls	O
.	O
</s>
