<s>
Bubbles	B-Application
is	O
a	O
2D	O
action	B-Application
game	I-Application
developed	O
by	O
Williams	O
Electronics	O
and	O
released	O
arcades	O
in	O
1982	B-Application
.	O
</s>
<s>
Kotlarik	O
wanted	O
to	O
create	O
a	O
non-violent	O
game	O
inspired	O
by	O
Pac-Man	B-Application
.	O
</s>
<s>
Bubbles	B-Application
is	O
an	O
action	B-Application
game	I-Application
where	O
the	O
player	O
controls	O
a	O
soap	O
bubble	O
from	O
a	O
top-down	O
perspective	O
.	O
</s>
<s>
The	O
game	O
uses	O
monaural	O
sound	O
and	O
raster	B-Algorithm
graphics	I-Algorithm
on	O
a	O
19inch	O
CRT	B-Device
monitor	I-Device
.	O
</s>
<s>
Inspired	O
by	O
Pac-Man	B-Application
,	O
he	O
envisioned	O
similar	O
gameplay	O
in	O
an	O
open	O
playing	O
field	O
rather	O
than	O
in	O
a	O
maze	O
.	O
</s>
<s>
Williams	O
Electronics	O
used	O
this	O
cabinet	O
for	O
only	O
two	O
other	O
games	O
,	O
Blaster	B-Application
and	O
Sinistar	B-Application
.	O
</s>
<s>
Bubbles	B-Application
arcade	O
cabinets	O
have	O
varying	O
degrees	O
of	O
rarity	O
.	O
</s>
<s>
In	O
2000	O
,	O
a	O
web-based	O
version	O
of	O
Bubbles	B-Application
,	O
along	O
with	O
nine	O
other	O
classic	O
arcade	O
games	O
,	O
was	O
published	O
on	O
Shockwave.com	B-Application
.	O
</s>
<s>
Four	O
years	O
later	O
,	O
Midway	O
Games	O
launched	O
a	O
website	O
featuring	O
the	O
Shockwave	B-Operating_System
versions	O
.	O
</s>
<s>
Williams	O
Electronics	O
included	O
Bubbles	B-Application
in	O
several	O
of	O
its	O
arcade	O
compilations	O
:	O
the	O
1996	O
Williams	O
Arcade	O
's	O
Greatest	O
Hits	O
,	O
the	O
2000	O
Midway	B-Device
's	I-Device
Greatest	I-Device
Arcade	I-Device
Hits	I-Device
(	O
Dreamcast	B-Operating_System
version	O
only	O
)	O
,	O
the	O
2003	O
Midway	B-Application
Arcade	I-Application
Treasures	I-Application
,	O
and	O
the	O
2012	O
Midway	B-Application
Arcade	I-Application
Origins	I-Application
.	O
</s>
