<s>
English	B-Operating_System
Country	I-Operating_System
Tune	I-Operating_System
is	O
a	O
2011	O
puzzle	O
video	O
game	O
developed	O
and	O
published	O
by	O
Increpare	O
Games	O
,	O
the	O
studio	O
of	O
designer	O
Stephen	O
Lavelle	O
.	O
</s>
<s>
The	O
first	O
few	O
levels	O
are	O
much	O
like	O
Sokoban	B-Device
puzzles	O
,	O
in	O
which	O
objects	O
are	O
pushed	O
around	O
on	O
a	O
grid	O
by	O
a	O
player-controlled	O
figure	O
until	O
they	O
reach	O
specified	O
target	O
cells	O
;	O
subsequent	O
levels	O
add	O
other	O
elements	O
with	O
different	O
unconventional	O
behaviors	O
and	O
goals	O
.	O
</s>
<s>
Lavelle	O
developed	O
the	O
prototype	O
,	O
which	O
was	O
in	O
part	O
inspired	O
by	O
Spacechem	B-Application
,	O
at	O
a	O
game	O
jam	O
event	O
.	O
</s>
<s>
Lavelle	O
has	O
also	O
cited	O
Cogs	B-Application
as	O
an	O
inspiration	O
.	O
</s>
<s>
Upon	O
release	O
,	O
English	B-Operating_System
Country	I-Operating_System
Tune	I-Operating_System
received	O
mostly	O
positive	O
reviews	O
,	O
with	O
its	O
iOS	B-Application
version	O
holding	O
a	O
score	O
of	O
78/100	O
based	O
on	O
four	O
critic	O
reviews	O
.	O
</s>
