<s>
Triplane	B-Application
Turmoil	I-Application
is	O
a	O
sidescrolling	O
dogfighting	O
flying	O
game	O
for	O
MS-DOS	B-Application
by	O
Finnish	O
developer	O
Dodekaedron	O
Software	O
.	O
</s>
<s>
The	O
game	O
is	O
based	O
on	O
the	O
1984	O
MS-DOS	B-Application
game	O
by	O
David	O
Clark	O
,	O
Sopwith	B-Application
.	O
</s>
<s>
Originally	O
released	O
as	O
shareware	O
,	O
in	O
2009	O
Dodekaedron	O
placed	O
the	O
source	O
code	O
,	O
documentation	O
,	O
images	O
and	O
sounds	O
under	O
the	O
GPLv3	O
on	O
SourceForge	B-Application
,	O
hosted	O
later	O
on	O
github.com	B-Application
.	O
</s>
<s>
The	O
community	O
continued	O
the	O
support	O
and	O
ported	O
the	O
game	O
via	O
SDL	B-Operating_System
to	O
other	O
platforms	O
including	O
Linux	B-Application
and	O
Windows	O
.	O
</s>
<s>
The	O
world	O
of	O
Triplane	B-Application
Turmoil	I-Application
appears	O
to	O
be	O
set	O
during	O
or	O
some	O
time	O
after	O
the	O
First	O
World	O
War	O
,	O
possibly	O
in	O
the	O
mid-1920s	O
,	O
given	O
the	O
fact	O
that	O
triplanes	O
still	O
have	O
nose-mounted	O
machine	O
guns	O
using	O
interrupter	O
gear	O
,	O
and	O
appear	O
to	O
be	O
capable	O
of	O
carrying	O
and	O
releasing	O
fairly	O
heavy	O
ordnance	O
.	O
</s>
<s>
This	O
ceiling	O
is	O
indicated	O
by	O
the	O
top	O
of	O
each	O
of	O
the	O
3	O
segments	O
in	O
VESA	O
SVGA	O
mode	O
,	O
or	O
the	O
top	O
of	O
the	O
player	O
's	O
screen	O
when	O
it	O
refuses	O
to	O
move	O
up	O
any	O
more	O
in	O
VGA	B-Protocol
mode	O
,	O
or	O
the	O
top	O
of	O
the	O
screen	O
in	O
Single	O
Player	O
.	O
</s>
<s>
There	O
are	O
two	O
video	O
modes	O
to	O
choose	O
from	O
for	O
multiplayer	O
,	O
the	O
regular	O
VGA	B-Protocol
,	O
in	O
essence	O
four	O
single-player	O
screens	O
with	O
the	O
addition	O
of	O
a	O
horizontal	O
indicator	O
on	O
each	O
screen	O
,	O
or	O
VESA	O
SVGA	O
,	O
a	O
faster	O
mode	O
in	O
which	O
the	O
entire	O
map	O
is	O
displayed	O
in	O
three	O
bars	O
running	O
across	O
the	O
screen	O
,	O
affording	O
a	O
view	O
of	O
all	O
other	O
planes	O
and	O
all	O
of	O
the	O
terrain	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Triplane	B-Application
Turmoil	I-Application
2	I-Application
,	O
was	O
released	O
in	O
2006	O
,	O
distributed	O
over	O
the	O
internet	O
.	O
</s>
<s>
Linux	B-Application
Format	O
magazine	O
in	O
December	O
2011	O
reviewed	O
Triplane	O
and	O
called	O
it	O
"	O
quite	O
good	O
"	O
and	O
"	O
great	O
fun	O
"	O
.	O
</s>
