<s>
Commander	B-Application
Keen	I-Application
in	I-Application
Goodbye	I-Application
,	I-Application
Galaxy	I-Application
(	O
stylized	O
as	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
!	I-Application
)	O
</s>
<s>
is	O
a	O
two-part	O
episodic	O
side-scrolling	O
platform	O
video	O
game	O
developed	O
by	O
id	O
Software	O
and	O
published	O
by	O
Apogee	O
Software	O
in	O
1991	O
for	O
DOS	B-Device
.	O
</s>
<s>
It	O
consists	O
of	O
the	O
fifth	O
and	O
sixth	O
episodes	O
of	O
the	O
Commander	B-Application
Keen	I-Application
series	O
,	O
though	O
they	O
are	O
numbered	O
as	O
the	O
fourth	O
and	O
fifth	O
,	O
as	O
Commander	B-Application
Keen	I-Application
in	I-Application
Keen	I-Application
Dreams	I-Application
is	O
not	O
part	O
of	O
the	O
main	O
continuity	O
.	O
</s>
<s>
The	O
game	O
follows	O
the	O
titular	O
Commander	B-Application
Keen	I-Application
,	O
an	O
eight-year-old	O
child	O
genius	O
,	O
as	O
he	O
first	O
journeys	O
through	O
the	O
Shadowlands	O
to	O
rescue	O
the	O
Gnosticenes	O
so	O
they	O
may	O
ask	O
the	O
Oracle	O
how	O
the	O
Shikadi	O
plan	O
to	O
destroy	O
the	O
galaxy	O
,	O
and	O
then	O
through	O
the	O
Shikadi	O
's	O
Armageddon	B-Application
Machine	I-Application
to	O
stop	O
them	O
.	O
</s>
<s>
After	O
the	O
success	O
of	O
Commander	B-Application
Keen	I-Application
in	I-Application
Invasion	I-Application
of	I-Application
the	I-Application
Vorticons	I-Application
,	O
the	O
developers	O
of	O
the	O
game	O
,	O
including	O
programmers	O
John	O
Carmack	O
and	O
John	O
Romero	O
,	O
designer	O
Tom	O
Hall	O
,	O
and	O
artist	O
Adrian	O
Carmack	O
,	O
left	O
their	O
jobs	O
at	O
Softdisk	O
to	O
found	O
id	O
Software	O
.	O
</s>
<s>
After	O
making	O
a	O
prototype	O
game	O
in	O
Keen	B-Application
Dreams	I-Application
to	O
develop	O
new	O
ideas	O
such	O
as	O
gameplay	O
changes	O
,	O
graphical	O
enhancements	O
,	O
and	O
artistic	O
improvements	O
,	O
the	O
team	O
worked	O
on	O
making	O
a	O
sequel	O
trilogy	O
of	O
episodes	O
from	O
June	O
to	O
December	O
1991	O
.	O
</s>
<s>
During	O
development	O
the	O
last	O
episode	O
was	O
split	O
off	O
to	O
be	O
released	O
as	O
a	O
stand-alone	O
game	O
,	O
Commander	B-Application
Keen	I-Application
in	I-Application
Aliens	I-Application
Ate	I-Application
My	I-Application
Babysitter	I-Application
,	O
with	O
the	O
remaining	O
two	O
episodes	O
produced	O
as	O
a	O
pair	O
instead	O
of	O
a	O
trilogy	O
.	O
</s>
<s>
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
did	O
not	O
initially	O
sell	O
as	O
well	O
as	O
the	O
first	O
trilogy	O
,	O
which	O
was	O
attributed	O
by	O
the	O
publisher	O
and	O
designer	O
to	O
its	O
lack	O
of	O
a	O
third	O
episode	O
hurting	O
it	O
given	O
the	O
shareware	B-License
model	O
of	O
publishing	O
.	O
</s>
<s>
Reviews	O
of	O
the	O
series	O
praised	O
the	O
challenge	O
and	O
humor	O
in	O
the	O
graphics	O
and	O
gameplay	O
,	O
especially	O
in	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
.	O
</s>
<s>
Although	O
another	O
Keen	O
game	O
was	O
planned	O
,	O
during	O
development	O
id	O
Software	O
began	O
work	O
on	O
Wolfenstein	B-Application
3D	I-Application
,	O
and	O
its	O
success	O
,	O
along	O
with	O
the	O
development	O
of	O
Doom	B-Application
,	O
led	O
id	O
to	O
not	O
develop	O
any	O
further	O
Keen	O
games	O
.	O
</s>
<s>
The	O
two	O
episodes	O
of	O
Commander	B-Application
Keen	I-Application
in	I-Application
Goodbye	I-Application
,	I-Application
Galaxy	I-Application
are	O
side-scrolling	O
platform	O
video	O
games	O
:	O
the	O
majority	O
of	O
the	O
game	O
features	O
the	O
player-controlled	O
Commander	B-Application
Keen	I-Application
viewed	O
from	O
the	O
side	O
while	O
moving	O
on	O
a	O
two-dimensional	O
plane	O
.	O
</s>
<s>
Once	O
entered	O
,	O
the	O
only	O
way	O
to	O
exit	O
a	O
level	O
is	O
to	O
reach	O
the	O
end	O
,	O
though	O
unlike	O
in	O
the	O
first	O
trilogy	O
of	O
episodes	O
,	O
Commander	B-Application
Keen	I-Application
in	I-Application
Invasion	I-Application
of	I-Application
the	I-Application
Vorticons	I-Application
,	O
the	O
player	O
can	O
save	O
their	O
game	O
at	O
any	O
point	O
.	O
</s>
<s>
While	O
Vorticons	B-Application
contained	O
a	O
raygun	O
and	O
the	O
in-between	O
episode	O
Commander	B-Application
Keen	I-Application
in	I-Application
Keen	I-Application
Dreams	I-Application
had	O
pellets	O
that	O
temporarily	O
stunned	O
enemies	O
,	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
features	O
a	O
stun	O
gun	O
that	O
knocks	O
out	O
most	O
enemies	O
permanently	O
using	O
ammo	O
found	O
throughout	O
the	O
game	O
.	O
</s>
<s>
The	O
game	O
is	O
broken	O
up	O
into	O
two	O
episodes	O
:	O
"	O
Secret	B-Application
of	I-Application
the	I-Application
Oracle	I-Application
"	O
and	O
"	O
The	B-Application
Armageddon	I-Application
Machine	I-Application
"	O
.	O
</s>
<s>
In	O
the	O
first	O
episode	O
,	O
having	O
defeated	O
the	O
Grand	O
Intellect	O
in	O
Invasion	B-Application
of	I-Application
the	I-Application
Vorticons	I-Application
and	O
saved	O
the	O
Earth	O
,	O
eight-year-old	O
child	O
Billy	O
Blaze	O
is	O
building	O
a	O
faster-than-light	O
communications	O
radio	O
.	O
</s>
<s>
Donning	O
his	O
helmet	O
as	O
Commander	B-Application
Keen	I-Application
,	O
he	O
takes	O
off	O
in	O
his	O
spaceship	O
—	O
first	O
stunning	O
his	O
parents	O
with	O
his	O
neural	O
stunner	O
gun	O
as	O
they	O
call	O
him	O
in	O
to	O
dinner	O
—	O
for	O
the	O
planet	O
of	O
Gnosticus	O
IV	O
,	O
home	O
of	O
the	O
Oracle	O
and	O
the	O
Gnosticenes	O
that	O
tend	O
it	O
,	O
to	O
find	O
out	O
who	O
the	O
Shikadi	O
are	O
and	O
how	O
they	O
plan	O
to	O
destroy	O
the	O
galaxy	O
.	O
</s>
<s>
The	O
Oracle	O
tells	O
Keen	O
that	O
the	O
Shikadi	O
are	O
"	O
shadow	O
beings	O
from	O
the	O
far	O
side	O
of	O
the	O
galaxy	O
"	O
who	O
are	O
building	O
an	O
Armageddon	B-Application
Machine	I-Application
at	O
Korath	O
III	O
to	O
blow	O
up	O
the	O
galaxy	O
and	O
rebuild	O
it	O
as	O
they	O
wish	O
afterwards	O
.	O
</s>
<s>
In	O
"	O
The	B-Application
Armageddon	I-Application
Machine	I-Application
"	O
,	O
Keen	O
journeys	O
through	O
the	O
giant	O
Armageddon	B-Application
Machine	I-Application
space	O
station	O
,	O
destroying	O
the	O
subsystems	O
of	O
the	O
machine	O
located	O
in	O
each	O
level	O
.	O
</s>
<s>
Keen	O
looks	O
in	O
the	O
control	O
room	O
to	O
find	O
out	O
why	O
the	O
Shikadi	O
wanted	O
to	O
destroy	O
the	O
galaxy	O
;	O
there	O
,	O
he	O
finds	O
a	O
note	O
,	O
written	O
in	O
the	O
series	O
 '	O
Standard	O
Galactic	O
Alphabet	O
cypher	O
,	O
from	O
the	O
final	O
boss	O
of	O
the	O
Vorticons	B-Application
trilogy	O
:	O
his	O
school	O
rival	O
Mortimer	O
McMire	O
,	O
whose	O
IQ	O
is	O
"	O
a	O
single	O
point	O
higher	O
"	O
than	O
Keen	O
's	O
.	O
</s>
<s>
The	O
note	O
tells	O
Keen	O
that	O
the	O
McMire	O
killed	O
in	O
the	O
previous	O
game	O
was	O
an	O
android	O
replica	O
,	O
that	O
the	O
"	O
Gannalech	O
"	O
is	O
a	O
mispronunciation	O
of	O
"	O
Grand	O
Intellect	O
"	O
,	O
his	O
title	O
from	O
the	O
first	O
trilogy	O
,	O
and	O
that	O
the	B-Application
Armageddon	I-Application
Machine	I-Application
was	O
itself	O
a	O
distraction	O
,	O
as	O
McMire	O
plans	O
on	O
destroying	O
the	O
universe	O
instead	O
.	O
</s>
<s>
In	O
October	O
—	O
December	O
1990	O
,	O
a	O
team	O
of	O
employees	O
from	O
programming	O
studio	O
Softdisk	O
,	O
calling	O
themselves	O
Ideas	O
from	O
the	O
Deep	O
,	O
developed	O
the	O
three-part	O
video	O
game	O
Commander	B-Application
Keen	I-Application
in	I-Application
Invasion	I-Application
of	I-Application
the	I-Application
Vorticons	I-Application
.	O
</s>
<s>
After	O
the	O
release	O
of	O
the	O
game	O
in	O
December	O
,	O
and	O
the	O
arrival	O
of	O
the	O
first	O
US$	O
10,500	O
royalty	O
check	O
from	O
shareware	B-License
publisher	O
Apogee	O
Software	O
,	O
the	O
team	O
quit	O
Softdisk	O
and	O
started	O
their	O
own	O
company	O
,	O
id	O
Software	O
.	O
</s>
<s>
As	O
the	O
team	O
began	O
to	O
explore	O
creating	O
another	O
set	O
of	O
Commander	B-Application
Keen	I-Application
games	O
,	O
they	O
made	O
a	O
prototype	O
game	O
for	O
Softdisk	O
,	O
Commander	B-Application
Keen	I-Application
in	I-Application
Keen	I-Application
Dreams	I-Application
,	O
to	O
fulfill	O
their	O
obligations	O
while	O
also	O
helping	O
improve	O
the	O
next	O
full	O
set	O
of	O
Keen	O
games	O
.	O
</s>
<s>
For	O
Invasion	B-Application
of	I-Application
the	I-Application
Vorticons	I-Application
,	O
John	O
Carmack	O
and	O
Romero	O
focused	O
exclusively	O
on	O
the	O
programming	O
,	O
while	O
Adrian	O
Carmack	O
joined	O
late	O
in	O
development	O
and	O
had	O
a	O
personal	O
art	O
style	O
that	O
did	O
not	O
match	O
with	O
the	O
game	O
.	O
</s>
<s>
The	O
team	O
reprised	O
their	O
roles	O
for	O
both	O
Keen	B-Application
Dreams	I-Application
and	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
with	O
the	O
addition	O
of	O
programmer	O
Jason	O
Blochowiak	O
for	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
and	O
changed	O
the	O
game	O
engine	O
and	O
design	O
for	O
the	O
next	O
Keen	O
games	O
:	O
an	O
increase	O
in	O
graphical	O
quality	O
,	O
a	O
pseudo-3D	O
view	O
rather	O
than	O
a	O
side-on	O
view	O
,	O
ramps	O
rather	O
than	O
solely	O
flat	O
surfaces	O
,	O
support	O
for	O
sound	B-Device
cards	I-Device
,	O
and	O
changes	O
to	O
the	O
design	O
based	O
on	O
player	O
feedback	O
.	O
</s>
<s>
The	O
working	O
title	O
for	O
the	O
game	O
was	O
Commander	B-Application
Keen	I-Application
II	O
-	O
Goodbye	B-Application
Galaxy	I-Application
.	O
</s>
<s>
For	O
Vorticons	B-Application
,	O
Carmack	O
had	O
created	O
adaptive	O
tile	O
refresh	O
to	O
produce	O
a	O
scrolling	O
effect	O
on	O
computers	O
not	O
powerful	O
enough	O
to	O
redraw	O
the	O
entire	O
screen	O
when	O
the	O
player	O
moved	O
.	O
</s>
<s>
For	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
he	O
wanted	O
to	O
scroll	O
the	O
background	O
at	O
a	O
different	O
rate	O
than	O
the	O
foreground	O
,	O
or	O
parallax	O
scrolling	O
,	O
but	O
again	O
computers	O
of	O
the	O
time	O
were	O
not	O
powerful	O
enough	O
to	O
do	O
so	O
smoothly	O
.	O
</s>
<s>
Hall	O
,	O
meanwhile	O
,	O
had	O
received	O
feedback	O
from	O
parents	O
who	O
did	O
not	O
like	O
that	O
the	O
enemies	O
in	O
Vorticons	B-Application
left	O
behind	O
corpses	O
instead	O
of	O
disappearing	O
like	O
in	O
other	O
games	O
;	O
he	O
did	O
not	O
want	O
the	O
violence	O
to	O
have	O
no	O
effects	O
,	O
and	O
so	O
in	O
Dreams	O
replaced	O
the	O
raygun	O
with	O
pellets	O
that	O
temporarily	O
stunned	O
enemies	O
.	O
</s>
<s>
He	O
was	O
not	O
satisfied	O
with	O
this	O
change	O
,	O
and	O
while	O
considering	O
ways	O
to	O
remove	O
Keen	O
's	O
parents	O
during	O
the	O
introduction	O
for	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
came	O
up	O
with	O
a	O
stun	O
gun	O
which	O
would	O
leave	O
behind	O
permanently	O
stunned	O
enemies	O
.	O
</s>
<s>
Additionally	O
,	O
music	O
,	O
which	O
was	O
not	O
included	O
in	O
prior	O
Keen	O
games	O
,	O
was	O
added	O
to	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
composed	O
by	O
Bobby	O
Prince	O
.	O
</s>
<s>
To	O
create	O
the	O
music	O
,	O
Prince	O
used	O
iMuse	B-Application
and	O
tweaked	O
the	O
music	O
tracks	O
with	O
eight-bar	O
loops	O
to	O
minimise	O
the	O
disk	O
space	O
they	O
occupied	O
.	O
</s>
<s>
The	O
music	O
used	O
in	O
stages	O
such	O
as	O
"	O
Lifewater	O
Oasis	O
"	O
had	O
been	O
written	O
for	O
a	O
Keen	B-Application
Dreams	I-Application
cinematic	O
,	O
with	O
the	O
melodies	O
corresponding	O
to	O
the	O
characters	O
 '	O
dialogue	O
and	O
tone	O
of	O
voice	O
,	O
but	O
was	O
repurposed	O
for	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
when	O
the	O
cinematic	O
was	O
rejected	O
due	O
to	O
space	O
limitations	O
.	O
</s>
<s>
In	O
June	O
1991	O
,	O
with	O
Keen	B-Application
Dreams	I-Application
completed	O
,	O
the	O
id	O
team	O
began	O
working	O
on	O
another	O
trilogy	O
of	O
Commander	B-Application
Keen	I-Application
episodes	O
.	O
</s>
<s>
The	O
game	O
,	O
episodes	O
four	O
though	O
six	O
,	O
was	O
intended	O
to	O
be	O
published	O
as	O
a	O
set	O
named	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
in	O
the	O
same	O
manner	O
as	O
the	O
first	O
one	O
:	O
released	O
through	O
Apogee	O
,	O
with	O
episode	O
four	O
released	O
for	O
free	O
in	O
order	O
to	O
spur	O
interest	O
in	O
purchasing	O
the	O
other	O
two	O
episodes	O
.	O
</s>
<s>
By	O
August	O
they	O
had	O
completed	O
a	O
beta	O
version	O
of	O
episode	O
four	O
,	O
"	O
Secret	B-Application
of	I-Application
the	I-Application
Oracle	I-Application
"	O
,	O
and	O
Romero	O
sent	O
it	O
off	O
to	O
a	O
fan	O
he	O
had	O
met	O
from	O
Canada	O
,	O
Mark	O
Rein	O
,	O
who	O
had	O
offered	O
to	O
play-test	O
the	O
game	O
.	O
</s>
<s>
Within	O
a	O
few	O
weeks	O
of	O
being	O
hired	O
,	O
Rein	O
made	O
a	O
deal	O
to	O
get	O
id	O
into	O
the	O
commercial	O
market	O
:	O
to	O
take	O
the	O
sixth	O
episode	O
and	O
make	O
it	O
a	O
stand-alone	O
game	O
,	O
published	O
as	O
a	O
retail	O
title	O
through	O
FormGen	O
instead	O
of	O
part	O
of	O
a	O
shareware	B-License
trilogy	O
.	O
</s>
<s>
Id	O
signed	O
the	O
deal	O
,	O
but	O
Scott	O
Miller	O
of	O
Apogee	O
was	O
dismayed	O
;	O
he	O
felt	O
that	O
not	O
having	O
a	O
full	O
trilogy	O
for	O
the	O
shareware	B-License
game	O
would	O
hurt	O
sales	O
.	O
</s>
<s>
There	O
,	O
they	O
worked	O
on	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
their	O
remaining	O
Softdisk	O
games	O
,	O
and	O
the	O
now	O
standalone	O
Commander	B-Application
Keen	I-Application
in	I-Application
Aliens	I-Application
Ate	I-Application
My	I-Application
Babysitter	I-Application
between	O
August	O
and	O
December	O
.	O
</s>
<s>
As	O
it	O
grew	O
colder	O
,	O
they	O
increasingly	O
spent	O
all	O
of	O
their	O
time	O
in	O
the	O
apartment	O
,	O
making	O
the	O
games	O
and	O
designing	O
a	O
game	O
that	O
would	O
later	O
become	O
Wolfenstein	B-Application
3D	I-Application
.	O
</s>
<s>
Despite	O
being	O
listed	O
numerically	O
as	O
the	O
sixth	O
episode	O
,	O
because	O
Aliens	B-Application
Ate	I-Application
My	I-Application
Babysitter	I-Application
had	O
a	O
different	O
publisher	O
and	O
schedule	O
it	O
was	O
developed	O
after	O
"	O
Secret	B-Application
of	I-Application
the	I-Application
Oracle	I-Application
"	O
but	O
before	O
"	O
The	B-Application
Armageddon	I-Application
Machine	I-Application
"	O
.	O
</s>
<s>
After	O
its	O
release	O
in	O
December	O
1991	O
,	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
met	O
with	O
sales	O
"	O
about	O
a	O
third	O
"	O
of	O
the	O
original	O
trilogy	O
,	O
which	O
had	O
made	O
US$	O
20,000	O
in	O
its	O
first	O
two	O
weeks	O
and	O
US$	O
60,000	O
a	O
month	O
by	O
June	O
1991	O
.	O
</s>
<s>
Scott	O
Miller	O
of	O
Apogee	O
blamed	O
the	O
falling	O
sales	O
on	O
the	O
lack	O
of	O
a	O
third	O
episode	O
,	O
which	O
he	O
felt	O
undercut	O
the	O
shareware	B-License
model	O
of	O
the	O
game	O
.	O
</s>
<s>
Tom	O
Hall	O
has	O
also	O
claimed	O
that	O
the	O
split	O
hurt	O
the	O
sales	O
of	O
the	O
shareware	B-License
game	O
,	O
though	O
he	O
has	O
said	O
that	O
"	O
they	O
still	O
did	O
decently	O
,	O
though	O
"	O
.	O
</s>
<s>
PC	O
Zone	O
,	O
in	O
its	O
first	O
issue	O
in	O
1993	O
,	O
quoted	O
shareware	B-License
distributors	O
as	O
saying	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
was	O
one	O
of	O
the	O
top	O
shareware	B-License
sellers	O
of	O
1992	O
,	O
behind	O
Wolfenstein	B-Application
3D	I-Application
.	O
</s>
<s>
Tom	O
Hall	O
has	O
claimed	O
"	O
The	B-Application
Armageddon	I-Application
Machine	I-Application
"	O
as	O
the	O
best	O
Commander	B-Application
Keen	I-Application
episode	O
and	O
his	O
favorite	O
.	O
</s>
<s>
In	O
October	O
1992	O
,	O
the	O
Shareware	B-Application
Industry	I-Application
Awards	I-Application
gave	O
the	O
Commander	B-Application
Keen	I-Application
series	O
the	O
"	O
Best	O
Entertainment	O
Software	O
and	O
Best	O
Overall	O
"	O
award	O
.	O
</s>
<s>
A	O
review	O
of	O
the	O
entire	O
Commander	B-Application
Keen	I-Application
series	O
in	O
1993	O
by	O
Sandy	O
Petersen	O
in	O
the	O
first	O
"	O
Eye	O
of	O
the	O
Monitor	O
"	O
column	O
for	O
Dragon	O
described	O
the	O
series	O
as	O
action	O
games	O
with	O
"	O
hilarious	O
graphics	O
"	O
.	O
</s>
<s>
Acknowledging	O
its	O
debt	O
to	O
Super	O
Mario	O
Bros.	O
,	O
he	O
called	O
it	O
,	O
especially	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
"	O
one	O
of	O
the	O
best	O
games	O
of	O
its	O
type	O
"	O
and	O
praised	O
that	O
it	O
was	O
not	O
"	O
mindlessly	O
hard	O
"	O
,	O
instead	O
requiring	O
some	O
thought	O
to	O
play	O
through	O
,	O
and	O
especially	O
the	O
humor	O
in	O
the	O
graphics	O
and	O
gameplay	O
.	O
</s>
<s>
Id	O
Software	O
did	O
not	O
produce	O
any	O
more	O
games	O
in	O
the	O
Commander	B-Application
Keen	I-Application
series	O
after	O
Goodbye	B-Application
Galaxy	I-Application
besides	O
the	O
co-developed	O
Aliens	B-Application
Ate	I-Application
My	I-Application
Babysitter	I-Application
.	O
</s>
<s>
Another	O
trilogy	O
of	O
episodes	O
,	O
titled	O
The	O
Universe	O
Is	O
Toast	O
,	O
was	O
planned	O
for	O
December	O
1992	O
,	O
but	O
was	O
cancelled	O
after	O
the	O
success	O
of	O
id	O
's	O
Wolfenstein	B-Application
3D	I-Application
and	O
development	O
focus	O
on	O
Doom	B-Application
.	O
</s>
<s>
When	O
GT	O
Interactive	O
wanted	O
to	O
publish	O
Doom	B-Application
II	I-Application
,	O
it	O
proved	O
itself	O
to	O
id	O
by	O
quickly	O
selling	O
30,000	O
copies	O
of	O
Goodbye	B-Application
Galaxy	I-Application
.	O
</s>
<s>
A	O
final	O
Keen	O
game	O
,	O
Commander	B-Application
Keen	I-Application
,	O
was	O
developed	O
for	O
the	O
Game	B-Device
Boy	I-Device
Color	I-Device
in	O
2001	O
by	O
David	O
A	O
.	O
Palmer	O
Productions	O
in	O
association	O
with	O
id	O
Software	O
,	O
and	O
published	O
by	O
Activision	O
.	O
</s>
<s>
Goodbye	B-Application
Galaxy	I-Application
has	O
been	O
released	O
as	O
part	O
of	O
several	O
collections	O
since	O
its	O
first	O
release	O
:	O
the	O
id	O
Anthology	O
compilation	O
in	O
1996	O
,	O
a	O
compilation	O
release	O
by	O
Apogee	O
in	O
1998	O
of	O
Invasion	B-Application
of	I-Application
the	I-Application
Vorticons	I-Application
and	O
Goodbye	B-Application
,	I-Application
Galaxy	I-Application
,	O
a	O
similar	O
compilation	O
in	O
2001	O
by	O
3D	O
Realms	O
titled	O
Commander	B-Application
Keen	I-Application
Combo	O
CD	O
,	O
and	O
the	O
3D	O
Realms	O
Anthology	O
in	O
2014	O
.	O
</s>
<s>
They	O
have	O
also	O
been	O
released	O
for	O
modern	O
computers	O
through	O
a	O
DOS	B-Device
emulator	O
,	O
and	O
sold	O
through	O
Steam	B-Application
since	O
2007	O
as	O
a	O
part	O
of	O
the	O
Commander	B-Application
Keen	I-Application
Complete	O
Pack	O
.	O
</s>
<s>
According	O
to	O
Steam	B-Application
Spy	O
,	O
as	O
of	O
June	O
2016	O
approximately	O
200,000	O
copies	O
have	O
been	O
sold	O
through	O
Steam	B-Application
.	O
</s>
<s>
One	O
of	O
the	O
enemies	O
created	O
for	O
"	O
Secret	B-Application
of	I-Application
the	I-Application
Oracle	I-Application
"	O
,	O
the	O
Dopefish	O
,	O
has	O
since	O
the	O
game	O
's	O
release	O
become	O
a	O
video	O
game	O
industry	O
in-joke	O
,	O
making	O
cameo	O
appearances	O
in	O
other	O
games	O
.	O
</s>
<s>
The	O
Dopefish	O
,	O
which	O
Hall	O
describes	O
as	O
"	O
just	O
a	O
stupid	O
green	O
fish	O
"	O
,	O
is	O
described	O
in	O
"	O
Secret	B-Application
of	I-Application
the	I-Application
Oracle	I-Application
"	O
as	O
"	O
the	O
second-dumbest	O
creature	O
in	O
the	O
universe	O
"	O
.	O
</s>
