<s>
Unvanquished	B-Application
is	O
a	O
free	B-Application
and	O
open-source	B-Application
video	I-Application
game	I-Application
.	O
</s>
<s>
Commenting	O
on	O
gameplay	O
,	O
Lifewire	O
noted	O
:	O
"	O
One	O
particularly	O
fun	O
aspect	O
of	O
Unvanquished	B-Application
is	O
that	O
as	O
insects	O
,	O
players	O
can	O
crawl	O
on	O
the	O
walls	O
and	O
ceilings	O
,	O
adding	O
a	O
new	O
,	O
though	O
perhaps	O
somewhat	O
disorienting	O
,	O
take	O
on	O
game	O
physics	O
"	O
.	O
</s>
<s>
Unvanquished	B-Application
is	O
a	O
spiritual	O
successor	O
to	O
Tremulous	B-Application
.	O
</s>
<s>
Development	O
began	O
the	O
summer	O
of	O
2011	O
on	O
SourceForge	B-Application
,	O
with	O
the	O
first	O
alpha	O
version	O
being	O
released	O
on	O
February	O
29	O
,	O
2012	O
.	O
</s>
<s>
The	O
game	O
moved	O
to	O
Github	B-Application
in	O
2015	O
.	O
</s>
<s>
Unvanquished	B-Application
is	O
developed	O
by	O
a	O
team	O
of	O
volunteers	O
who	O
used	O
to	O
release	O
a	O
new	O
Alpha	O
on	O
the	O
first	O
Sunday	O
of	O
every	O
month	O
.	O
</s>
<s>
The	O
daemon	O
engine	O
is	O
a	O
fork	B-Application
of	O
the	O
earlier	O
version	O
of	O
the	O
OpenWolf	O
Engine	O
.	O
</s>
<s>
While	O
developing	O
"	O
their	O
"	O
engine	O
,	O
Unvanquished	B-Application
team	O
uploaded	O
clean	O
copy	O
of	O
the	O
source	O
code	O
,	O
dropped	O
original	O
commit	O
history	O
and	O
claimed	O
project	O
as	O
theirs	O
.	O
</s>
<s>
In	O
2015	O
,	O
with	O
version	O
0.42	O
,	O
the	O
Unvanquished	B-Application
developers	O
managed	O
to	O
separate	O
the	O
game	O
's	O
engine	O
code	O
from	O
the	O
game	O
's	O
code	O
by	O
teaming	O
up	O
with	O
developers	O
of	O
Xonotic	B-Application
.	O
</s>
<s>
Michael	O
Larabel	O
from	O
Phoronix.com	O
praised	O
Unvanquished	B-Application
's	O
graphics	O
in	O
July	O
2012	O
,	O
while	O
it	O
was	O
still	O
in	O
alpha	O
state	O
.	O
</s>
<s>
Between	O
2011	O
and	O
June	O
2017	O
the	O
game	O
was	O
downloaded	O
alone	O
from	O
SourceForge	B-Application
over	O
1.3	O
million	O
times	O
.	O
</s>
