<s>
Trism	B-Operating_System
is	O
a	O
puzzle	O
game	O
for	O
the	O
Apple	O
iPhone	B-Device
developed	O
by	O
American	O
studio	O
Demiforce	O
.	O
</s>
<s>
The	O
game	O
and	O
developer	O
made	O
the	O
news	O
for	O
being	O
a	O
rags	B-Application
to	I-Application
riches	I-Application
story	O
.	O
</s>
<s>
The	O
game	O
makes	O
use	O
of	O
the	O
iPhone	B-Device
's	O
built	O
in	O
accelerometer	O
,	O
and	O
involves	O
the	O
sliding	O
of	O
colored	O
triangular	O
tiles	O
called	O
""	O
in	O
order	O
to	O
make	O
matches	O
of	O
three	O
or	O
more	O
.	O
</s>
<s>
As	O
soon	O
as	O
a	O
match	O
is	O
made	O
,	O
the	O
tiles	O
disappear	O
and	O
,	O
depending	O
on	O
the	O
direction	O
in	O
which	O
the	O
iPhone	B-Device
is	O
tilted	O
,	O
the	O
gaps	O
left	O
behind	O
will	O
be	O
filled	O
.	O
</s>
<s>
The	O
game	O
has	O
been	O
compared	O
to	O
Bejeweled	B-Operating_System
2	I-Operating_System
,	O
although	O
the	O
developer	O
has	O
stated	O
the	O
gameplay	O
is	O
unique	O
,	O
and	O
there	O
is	O
a	O
patent	O
pending	O
.	O
</s>
<s>
Trism	B-Operating_System
has	O
four	O
gameplay	O
modes	O
:	O
</s>
<s>
This	O
is	O
the	O
main	O
gameplay	O
mode	O
in	O
which	O
the	O
user	O
slides	O
the	O
on	O
the	O
screen	O
diagonally	O
or	O
horizontally	O
in	O
order	O
to	O
create	O
matches	O
of	O
three	O
or	O
more	O
;	O
the	O
remaining	O
gaps	O
left	O
behind	O
are	O
then	O
filled	O
by	O
the	O
surrounding	O
depending	O
upon	O
the	O
direction	O
in	O
which	O
the	O
iPhone	B-Device
is	O
tilted	O
.	O
</s>
<s>
This	O
is	O
done	O
by	O
tilting	O
the	O
iPhone	B-Device
in	O
order	O
to	O
make	O
them	O
slide	O
.	O
</s>
<s>
Trism	B-Operating_System
has	O
won	O
awards	O
such	O
as	O
Best	O
Casual	O
Game	O
from	O
AppStoreApps.com,	O
1st	O
on	O
iLounge	O
's	O
Best	O
Apps	O
and	O
Games	O
,	O
a	O
Gold	O
award	O
from	O
Pocket	O
Gamer	O
,	O
Slide	O
to	O
Play	O
's	O
"	O
Must	O
have	O
"	O
award	O
,	O
one	O
of	O
Wired	O
's	O
"	O
10	O
most	O
awesome	O
iPhone	B-Device
Apps	O
of	O
2008	O
,	O
"	O
and	O
was	O
an	O
AIAS	O
finalist	O
for	O
"	O
Cellular	O
game	O
of	O
the	O
year	O
"	O
.	O
</s>
