<s>
is	O
a	O
single-player	O
2D	O
freeware	B-Application
game	I-Application
developed	O
with	O
BlitzMax	B-Language
.	O
</s>
<s>
The	O
game	O
involves	O
the	O
player	O
guiding	O
the	O
small	O
blob-shaped	O
main	O
character	O
named	O
"	O
Plobb	B-Application
"	O
around	O
the	O
screen	O
where	O
he	O
is	O
attacked	O
by	O
enemy	O
bubbles	O
.	O
</s>
<s>
The	O
aim	O
is	O
to	O
eliminate	O
the	O
bubbles	O
and	O
finally	O
also	O
the	O
arch-enemy	O
in	O
order	O
to	O
win	O
the	O
game	O
and	O
regain	O
Plobb	B-Application
's	O
freedom	O
.	O
</s>
<s>
The	O
game	O
was	O
created	O
as	O
a	O
research	O
project	O
by	O
Bastiaan	O
van	O
Rooden	O
from	O
Nothing	O
Inc.	O
,	O
Switzerland	B-Protocol
,	O
which	O
develops	O
other	O
freeware	B-Application
games	I-Application
but	O
also	O
advergames	B-Application
among	O
other	O
products	O
.	O
</s>
<s>
First	O
launched	O
in	O
2005	O
,	O
the	O
game	O
was	O
only	O
available	O
for	O
Windows	B-Application
while	O
a	O
version	O
compatible	O
with	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
was	O
developed	O
in	O
2007	O
.	O
</s>
<s>
An	O
introduction	O
tells	O
the	O
story	O
of	O
Plobb	B-Application
's	O
captivation	O
by	O
his	O
arch-enemy	O
the	O
Evil	O
Motts	O
of	O
Psodor	O
.	O
</s>
<s>
In	O
order	O
to	O
escape	O
from	O
Evil	O
Motts	O
 '	O
Castle	O
of	O
Nightmares	O
Plobb	B-Application
has	O
,	O
by	O
spitting	O
shots	O
,	O
to	O
fight	O
and	O
eliminate	O
the	O
enemy	O
bubbles	O
that	O
sap	O
his	O
energy	O
.	O
</s>
<s>
The	O
game-play	O
structure	O
follows	O
those	O
of	O
classic	O
shoot	O
'	O
em	O
ups	O
of	O
the	O
80s	O
,	O
also	O
known	O
as	O
Golden	O
Age	O
of	O
Arcade	O
Games	O
,	O
and	O
resembles	O
first	O
and	O
foremost	O
the	O
game-play	O
of	O
Asteroids	B-Application
.	O
</s>
<s>
The	O
player	O
,	O
acting	O
by	O
the	O
avatar	B-Application
Plobb	B-Application
throughout	O
the	O
game	O
has	O
to	O
navigate	O
around	O
the	O
bubbles	O
that	O
come	O
crossing	O
the	O
screen	O
and	O
to	O
aim	O
shots	O
at	O
them	O
by	O
spitting	O
in	O
their	O
direction	O
.	O
</s>
<s>
The	O
player	O
navigates	O
Plobb	B-Application
by	O
placing	O
the	O
cursor	O
in	O
the	O
direction	O
of	O
or	O
directly	O
on	O
the	O
target	O
towards	O
which	O
Plobb	B-Application
will	O
then	O
move	O
to	O
and	O
upon	O
left	O
mouse	O
click	O
also	O
will	O
emit	O
shots	O
.	O
</s>
<s>
The	O
speed	O
with	O
which	O
Plobb	B-Application
moves	O
increases	O
with	O
the	O
distance	O
of	O
the	O
cursor	O
to	O
the	O
actual	O
position	O
of	O
Plobb	B-Application
on	O
the	O
screen	O
.	O
</s>
<s>
If	O
Plobb	B-Application
is	O
touched	O
by	O
an	O
enemy	O
bubble	O
he	O
will	O
lose	O
energy	O
.	O
</s>
<s>
The	O
play	O
is	O
structured	O
in	O
5	O
worlds	O
with	O
5	O
levels	O
each	O
with	O
the	O
final	O
fight	O
between	O
Plobb	B-Application
and	O
Evil	O
Motts	O
on	O
a	O
separate	O
last	O
level	O
.	O
</s>
<s>
The	O
generally	O
round	O
and	O
colorful	O
design	O
can	O
be	O
considered	O
a	O
distinct	O
characteristic	O
of	O
the	O
Plobb	B-Application
!	I-Application
</s>
