<s>
(	O
released	O
in	O
North	O
America	O
as	O
Yoshi	B-Application
Topsy-Turvy	I-Application
)	O
is	O
a	O
2004	O
platform	O
game	O
for	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
that	O
was	O
developed	O
by	O
Artoon	O
and	O
published	O
by	O
Nintendo	O
.	O
</s>
<s>
By	O
tilting	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
left	O
or	O
right	O
,	O
the	O
player	O
can	O
tilt	O
the	O
game	O
area	O
,	O
causing	O
enemies	O
and	O
other	O
objects	O
to	O
slide	O
as	O
the	O
direction	O
of	O
gravity	O
changes	O
.	O
</s>
<s>
This	O
gameplay	O
mechanic	O
is	O
used	O
to	O
solve	O
puzzles	O
or	O
aid	O
Yoshi	B-Application
in	O
completing	O
levels	O
.	O
</s>
<s>
Yoshi	B-Application
can	O
jump	O
and	O
stick	O
out	O
his	O
tongue	O
to	O
eat	O
fruit	O
or	O
enemies	O
.	O
</s>
<s>
After	O
eating	O
an	O
enemy	O
,	O
Yoshi	B-Application
will	O
produce	O
a	O
small	O
puff	O
of	O
air	O
instead	O
of	O
making	O
eggs	O
.	O
</s>
<s>
By	O
moving	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
side	O
to	O
side	O
,	O
players	O
tilt	O
the	O
world	O
around	O
Yoshi	B-Application
,	O
causing	O
enemies	O
to	O
roll	O
around	O
,	O
swinging	O
ships	O
and	O
pendulums	O
,	O
and	O
bouncing	O
items	O
all	O
over	O
the	O
place	O
.	O
</s>
<s>
When	O
Bowser	O
starts	O
wreaking	O
havoc	O
on	O
Yoshi	B-Application
's	O
Island	O
,	O
a	O
book	O
spirit	O
named	O
Hongo	O
traps	O
the	O
island	O
within	O
the	O
pages	O
of	O
a	O
storybook	O
.	O
</s>
<s>
Only	O
by	O
locking	O
Bowser	O
away	O
,	O
Yoshi	B-Application
can	O
convince	O
Hongo	O
to	O
release	O
the	O
rest	O
of	O
the	O
island	O
,	O
so	O
he	O
sets	O
out	O
to	O
progress	O
through	O
the	O
chapters	O
of	O
the	O
book	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
its	O
release	O
,	O
most	O
critics	O
thought	O
of	O
Yoshi	B-Application
's	I-Application
Universal	I-Application
Gravitation	I-Application
as	O
a	O
mediocre	O
title	O
.	O
</s>
<s>
Craig	O
Harris	O
of	O
IGN	O
said	O
the	O
game	O
was	O
too	O
short	O
,	O
and	O
most	O
critics	O
thought	O
the	O
other	O
Game	B-Device
Boy	I-Device
Advance	I-Device
game	O
to	O
use	O
a	O
tilt	O
sensor	O
,	O
WarioWare	O
:	O
Twisted	O
!,	O
was	O
a	O
better	O
example	O
of	O
tilt-sensing	O
technology	O
in	O
video	O
games	O
.	O
</s>
