<s>
Circus	O
is	O
a	O
block	O
breaker	O
arcade	O
game	O
released	O
by	O
Exidy	O
in	O
1977	B-Application
,	O
and	O
distributed	O
by	O
Taito	O
in	O
Japan	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
re-themed	O
variant	O
of	O
Atari	O
's	O
Breakout	B-Application
,	O
where	O
the	O
player	O
controls	O
a	O
seesaw	O
and	O
clown	O
in	O
order	O
to	O
pop	O
all	O
the	O
balloons	O
in	O
the	O
level	O
.	O
</s>
<s>
Clowns	B-Application
bounce	O
off	O
of	O
balloons	O
,	O
walls	O
,	O
and	O
jumping	O
boards	O
,	O
but	O
will	O
pass	O
directly	O
through	O
multiple	O
balloons	O
if	O
they	O
are	O
moving	O
quickly	O
enough	O
.	O
</s>
<s>
The	O
arcade	O
game	O
was	O
a	O
commercial	O
success	O
for	O
Taito	O
in	O
Japan	O
,	O
where	O
Circus	O
was	O
among	O
the	O
top	O
ten	O
highest-earning	O
arcade	B-Application
games	I-Application
of	I-Application
1977	I-Application
and	O
the	O
year	O
's	O
fourth	O
highest-earning	O
arcade	B-Application
video	I-Application
game	I-Application
,	O
below	O
Taito	O
's	O
own	O
Speed	B-Application
Race	I-Application
DX	I-Application
,	O
Atari	O
's	O
Breakout	B-Application
(	O
distributed	O
by	O
Namco	O
)	O
and	O
Universal	O
's	O
Scratch	O
.	O
</s>
<s>
It	O
was	O
the	O
seventh	O
highest-earning	O
arcade	B-Application
video	I-Application
game	I-Application
of	I-Application
1978	I-Application
in	O
Japan	O
.	O
</s>
<s>
Atari	O
released	O
Circus	B-Application
Atari	I-Application
for	O
the	O
Atari	O
VCS	O
on	O
January	O
10	O
,	O
1980	O
.	O
</s>
<s>
Datasoft	B-Application
's	O
1982	O
Clowns	B-Application
and	I-Application
Balloons	I-Application
,	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
,	O
replaces	O
the	O
seesaw	O
with	O
a	O
trampoline	O
.	O
</s>
<s>
This	O
game	O
uses	O
sky	B-Application
diving	I-Application
as	O
a	O
motif	O
,	O
and	O
has	O
sound	O
effects	O
for	O
the	O
start	O
of	O
the	O
game	O
and	O
game	O
over	O
scene	O
(	O
The	O
U.S.	O
Air	O
Force	O
(	O
song	O
)	O
for	O
the	O
opening	O
and	O
Ring	O
a	O
Ring	O
o	O
 '	O
Roses	O
for	O
game	O
overs	O
.	O
)	O
</s>
<s>
It	O
was	O
later	O
ported	O
to	O
PlayStation	B-Device
2	I-Device
.	O
</s>
