<s>
Sentris	B-Application
is	O
a	O
music	B-Application
video	I-Application
game	I-Application
where	O
players	O
solve	O
puzzles	O
by	O
composing	O
musical	B-Application
loops	I-Application
.	O
</s>
<s>
Following	O
a	O
successful	O
Kickstarter	O
crowdfunding	O
campaign	O
in	O
October	O
2013	O
,	O
an	O
early	O
access	O
version	O
of	O
the	O
game	O
was	O
released	O
for	O
Linux	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
and	O
OS	B-Operating_System
X	I-Operating_System
in	O
August	O
2014	O
,	O
with	O
an	O
official	O
release	O
in	O
August	O
2015	O
.	O
</s>
<s>
A	O
PlayStation	B-Operating_System
4	I-Operating_System
version	O
is	O
planned	O
for	O
the	O
future	O
.	O
</s>
<s>
An	O
Ouya	B-Application
version	O
was	O
in	O
development	O
,	O
until	O
the	O
Razer	O
acquisition	O
rendered	O
the	O
contract	O
void	O
.	O
</s>
<s>
In	O
Sentris	B-Application
,	O
players	O
drop	O
musical	O
notes	O
from	O
various	O
instruments	O
onto	O
a	O
set	O
of	O
rotating	O
concentric	O
circles	O
,	O
these	O
circles	O
represent	O
musical	B-Application
loops	I-Application
which	O
replay	O
the	O
music	O
to	O
the	O
player	O
.	O
</s>
<s>
Aside	O
from	O
the	O
puzzle	O
gameplay	O
,	O
Sentris	B-Application
also	O
offers	O
performance	O
and	O
remix	O
modes	O
.	O
</s>
<s>
Sentris	B-Application
is	O
designed	O
and	O
developed	O
by	O
Samantha	O
Kalman	O
,	O
founder	O
and	O
director	O
of	O
Timbre	O
Interactive	O
.	O
</s>
<s>
While	O
Kalman	O
had	O
prior	O
experience	O
shipping	O
software	O
as	O
QA	O
director	O
at	O
Unity	B-Application
,	O
Sentris	B-Application
is	O
her	O
first	O
commercial	O
video	O
game	O
.	O
</s>
<s>
Given	O
her	O
experience	O
,	O
Unity	B-Application
was	O
a	O
natural	O
choice	O
for	O
the	O
game	O
engine	O
,	O
Kalman	O
also	O
cites	O
Unity	B-Application
's	O
low	O
cost	O
as	O
an	O
important	O
factor	O
in	O
her	O
decision	O
.	O
</s>
<s>
Kalman	O
began	O
working	O
on	O
Sentris	B-Application
full-time	O
in	O
the	O
Summer	O
of	O
2013	O
.	O
</s>
<s>
She	O
had	O
first	O
attempted	O
full-time	O
games	O
development	O
in	O
2011	O
,	O
and	O
though	O
that	O
attempt	O
failed	O
,	O
it	O
did	O
produce	O
Sen	O
,	O
a	O
free	O
music	B-Application
video	I-Application
game	I-Application
with	O
many	O
of	O
the	O
concepts	O
that	O
would	O
be	O
found	O
in	O
Sentris	B-Application
.	O
</s>
<s>
Kalman	O
was	O
inspired	O
to	O
make	O
a	O
music	B-Application
video	I-Application
game	I-Application
by	O
her	O
time	O
spent	O
playing	O
in	O
a	O
band	O
,	O
she	O
wanted	O
to	O
create	O
a	O
game	O
which	O
captured	O
the	O
joy	O
of	O
creation	O
she	O
felt	O
during	O
jam	B-Application
sessions	I-Application
.	O
</s>
<s>
A	O
well	O
received	O
showing	O
of	O
a	O
Sentris	B-Application
prototype	O
at	O
the	O
2013	O
Seattle	O
Indies	O
Expo	O
encouraged	O
Kalman	O
to	O
seek	O
funding	O
on	O
Kickstarter	O
.	O
</s>
<s>
An	O
alpha	O
version	O
of	O
Sentris	B-Application
was	O
released	O
as	O
an	O
early	O
access	O
title	O
in	O
August	O
2014	O
.	O
</s>
<s>
Planned	O
updates	O
include	O
an	O
engine	O
upgrade	O
to	O
Unity	B-Application
5	I-Application
,	O
which	O
will	O
allow	O
Kalman	O
to	O
access	O
"	O
the	O
 [ new ] 	O
audio	O
mixer	O
,	O
new	O
audio	O
effects	O
,	O
and	O
a	O
ton	O
of	O
under-the-hood	O
audio	O
improvements.	O
"	O
</s>
