<s>
Sissy	B-Operating_System
's	I-Operating_System
Magical	I-Operating_System
Ponycorn	I-Operating_System
Adventure	I-Operating_System
is	O
a	O
2011	O
indie	O
graphic	O
adventure	O
game	O
developed	O
by	O
Untold	O
Entertainment	O
Inc	O
.	O
founder	O
Ryan	O
Creighton	O
and	O
illustrated	O
and	O
voiced	O
by	O
his	O
then-five-year-old	O
daughter	O
Cassie	O
Creighton	O
.	O
</s>
<s>
It	O
was	O
released	O
as	O
a	O
browser	B-Protocol
game	I-Protocol
on	O
computers	O
,	O
and	O
later	O
released	O
on	O
the	O
iPad	B-Device
and	O
BlackBerry	B-Application
PlayBook	I-Application
.	O
</s>
<s>
Sissy	B-Operating_System
's	I-Operating_System
Magical	I-Operating_System
Ponycorn	I-Operating_System
Adventure	I-Operating_System
is	O
a	O
graphic	O
adventure	O
game	O
where	O
players	O
control	O
Sissy	O
by	O
clicking	O
on	O
parts	O
of	O
the	O
setting	O
to	O
point	O
to	O
her	O
where	O
to	O
move	O
.	O
</s>
<s>
Sissy	B-Operating_System
's	I-Operating_System
Magical	I-Operating_System
Ponycorn	I-Operating_System
Adventure	I-Operating_System
was	O
designed	O
by	O
Ryan	O
Creighton	O
and	O
his	O
then-five-year-old	O
daughter	O
Cassie	O
Creighton	O
under	O
Ryan	O
's	O
company	O
Untold	O
Entertainment	O
Inc	O
.	O
Ryan	O
was	O
responsible	O
for	O
developing	O
the	O
game	O
and	O
voicing	O
non-playable	O
characters	O
,	O
while	O
Cassie	O
voiced	O
Sissy	O
,	O
drew	O
the	O
art	O
,	O
created	O
the	O
non-playable	O
characters	O
,	O
and	O
designed	O
some	O
of	O
the	O
puzzles	O
.	O
</s>
<s>
Sissy	B-Operating_System
's	I-Operating_System
Magical	I-Operating_System
Ponycorn	I-Operating_System
Adventure	I-Operating_System
was	O
released	O
on	O
May	O
24	O
,	O
2011	O
.	O
</s>
<s>
It	O
was	O
released	O
as	O
a	O
browser	B-Protocol
game	I-Protocol
on	O
computers	O
and	O
later	O
on	O
the	O
iPad	B-Device
and	O
BlackBerry	B-Application
PlayBook	I-Application
.	O
</s>
<s>
Sissy	B-Operating_System
's	I-Operating_System
Magical	I-Operating_System
Ponycorn	I-Operating_System
Adventure	I-Operating_System
has	O
received	O
significant	O
praise	O
for	O
its	O
design	O
and	O
Cassie	O
's	O
ambition	O
to	O
make	O
a	O
video	O
game	O
.	O
</s>
<s>
It	O
became	O
popular	O
in	O
part	O
because	O
of	O
a	O
number	O
of	O
Twitter	B-Application
messages	O
from	O
people	O
in	O
the	O
industry	O
about	O
it	O
,	O
such	O
as	O
independent	O
designers	O
Anna	O
Anthropy	O
and	O
Erin	O
Robinson	O
,	O
journalist	O
Mathew	O
Kumar	O
,	O
graphic	O
adventure	O
game	O
developer	O
Ron	O
Gilbert	O
,	O
and	O
International	O
Games	O
Festival	O
chair	O
Brandon	O
Boyer	O
.	O
</s>
<s>
Mark	O
Serrells	O
for	O
Kotaku	O
Australia	O
felt	O
that	O
the	O
game	O
may	O
be	O
the	O
most	O
adorable	O
game	O
ever	O
,	O
comparing	O
it	O
to	O
a	O
combination	O
between	O
webcomic	O
Axe	O
Cop	O
and	O
The	B-Device
Smurfs	I-Device
.	O
</s>
<s>
Alex	O
Navarro	O
for	O
Giant	O
Bomb	O
also	O
compared	O
it	O
to	O
Axe	O
Cop	O
,	O
noting	O
influences	O
such	O
as	O
My	O
Little	O
Pony	O
and	O
Pokémon	B-Application
.	O
</s>
<s>
A	O
stage	O
based	O
on	O
the	O
game	O
was	O
featured	O
in	O
the	O
PC	O
game	O
They	B-Device
Bleed	I-Device
Pixels	I-Device
.	O
</s>
