<s>
It	O
was	O
released	O
in	O
2014	O
for	O
PC	O
and	O
iOS	B-Application
and	O
is	O
the	O
first	O
major	O
project	O
of	O
Pixel	O
since	O
Cave	B-Application
Story	I-Application
in	O
2004	O
.	O
</s>
<s>
A	O
short	O
,	O
free	O
demo	O
titled	O
Pink	B-Application
Hour	I-Application
was	O
made	O
available	O
a	O
month	O
before	O
the	O
full	O
game	O
's	O
release	O
.	O
</s>
<s>
A	O
short	O
free	O
companion	O
game	O
and	O
sequel	O
to	O
Pink	B-Application
Hour	I-Application
titled	O
Pink	O
Heaven	O
was	O
released	O
in	O
November	O
2015	O
,	O
coinciding	O
with	O
the	O
new	O
Kero	B-Application
Blaster	I-Application
update	O
.	O
</s>
<s>
In	O
Kero	B-Application
Blaster	I-Application
,	O
the	O
player	O
controls	O
a	O
frog	B-Algorithm
working	O
for	O
Cat	O
&	O
Frog	B-Algorithm
,	O
a	O
teleporter	O
company	O
.	O
</s>
<s>
USGamer	O
described	O
the	O
gameplay	O
as	O
"	O
akin	O
to	O
...	O
Contra	B-Application
or	O
old-school	O
,	O
pre-Symphony	O
of	O
the	O
Night	O
Castlevanias.	O
"	O
</s>
<s>
Kero	B-Application
Blaster	I-Application
is	O
controlled	O
by	O
changing	O
direction	O
,	O
jumping	O
,	O
and	O
charging	O
and	O
firing	O
the	O
player	O
character	O
's	O
weapon	O
.	O
</s>
<s>
Kero	B-Application
Blaster	I-Application
was	O
originally	O
supposed	O
to	O
be	O
released	O
in	O
2013	O
,	O
but	O
Pixel	O
delayed	O
its	O
release	O
just	O
before	O
it	O
was	O
to	O
come	O
out	O
.	O
</s>
<s>
The	O
game	O
was	O
rebuilt	O
from	O
Gero	B-Application
Blaster	I-Application
,	O
which	O
Pixel	O
announced	O
on	O
in	O
Japan	O
,	O
early	O
2013	O
,	O
but	O
never	O
released	O
.	O
</s>
<s>
Gero	B-Application
Blaster	I-Application
was	O
a	O
game	O
based	O
on	O
comics	O
that	O
Pixel	O
drew	O
in	O
college	O
,	O
starring	O
himself	O
as	O
a	O
frog	B-Algorithm
and	O
his	O
girlfriend	O
as	O
a	O
cat	O
.	O
</s>
<s>
While	O
Pixel	O
developed	O
Cave	B-Application
Story	I-Application
entirely	O
on	O
his	O
own	O
,	O
he	O
worked	O
together	O
with	O
Kiyoko	O
Kawanaka	O
for	O
Kero	B-Application
Blaster	I-Application
so	O
that	O
he	O
could	O
stay	O
motivated	O
.	O
</s>
<s>
A	O
month	O
before	O
the	O
full	O
release	O
,	O
Pixel	O
released	O
a	O
demo	O
and	O
prologue	O
to	O
Kero	B-Application
Blaster	I-Application
,	O
titled	O
Pink	B-Application
Hour	I-Application
.	O
</s>
<s>
The	O
release	O
date	O
of	O
Kero	B-Application
Blaster	I-Application
,	O
May	O
11	O
,	O
2014	O
,	O
coincides	O
with	O
the	O
three-year	O
anniversary	O
of	O
Japanese	O
digital	O
distributor	O
Playism	O
,	O
on	O
which	O
the	O
game	O
was	O
released	O
.	O
</s>
<s>
Kero	B-Application
Blaster	I-Application
was	O
released	O
on	O
Steam	B-Application
on	O
11	O
November	O
2015	O
.	O
</s>
<s>
In	O
November	O
2015	O
,	O
Kero	B-Application
Blaster	I-Application
was	O
updated	O
as	O
Pixel	O
added	O
a	O
"	O
Hard	O
Mode	O
"	O
and	O
"	O
Overtime	O
Mode	O
"	O
to	O
the	O
game	O
.	O
</s>
<s>
Alongside	O
this	O
update	O
,	O
Pixel	O
released	O
a	O
second	O
short	O
,	O
free	O
game	O
titled	O
Pink	O
Heaven	O
,	O
which	O
is	O
the	O
sequel	O
to	O
Pink	B-Application
Hour	I-Application
.	O
</s>
<s>
This	O
companion	O
game	O
once	O
again	O
starred	O
the	O
pink	O
office	O
lady	O
and	O
served	O
as	O
a	O
demo	O
for	O
Kero	B-Application
Blaster	I-Application
.	O
</s>
<s>
A	O
PlayStation	B-Operating_System
4	I-Operating_System
port	O
of	O
the	O
game	O
was	O
released	O
on	O
April	O
11	O
,	O
2017	O
.	O
</s>
<s>
A	O
Nintendo	B-Application
Switch	I-Application
port	O
of	O
the	O
game	O
was	O
released	O
on	O
August	O
23	O
,	O
2018	O
via	O
eShop	B-Application
,	O
and	O
later	O
Singapore-based	O
publisher	O
1Print	O
Games	O
announced	O
a	O
physical	O
Nintendo	B-Application
Switch	I-Application
release	O
for	O
November	O
29	O
,	O
2019	O
.	O
</s>
<s>
An	O
Android	B-Application
port	O
of	O
the	O
game	O
was	O
released	O
on	O
December	O
24	O
,	O
2021	O
via	O
Google	B-Application
Play	I-Application
.	O
</s>
<s>
Before	O
the	O
full	O
release	O
,	O
PCGamer	O
called	O
the	O
free	O
Pink	B-Application
Hour	I-Application
demo	O
"	O
too	O
brief	O
and	O
too	O
difficult	O
to	O
really	O
get	O
to	O
grips	O
with	O
,	O
"	O
though	O
praised	O
the	O
game	O
's	O
trailer	O
.	O
</s>
<s>
After	O
the	O
release	O
of	O
Kero	B-Application
Blaster	I-Application
,	O
TouchArcade	O
described	O
Pink	B-Application
Hour	I-Application
as	O
a	O
"	O
great	O
way	O
to	O
check	O
out	O
what	O
KeroBlaster	B-Application
is	O
about	O
-	O
or	O
just	O
to	O
get	O
a	O
new	O
level	O
of	O
the	O
game	O
to	O
play.	O
"	O
</s>
<s>
Kero	B-Application
Blaster	I-Application
received	O
positive	O
reviews	O
upon	O
release	O
.	O
</s>
<s>
Eurogamer	O
stated	O
that	O
Kero	B-Application
Blaster	I-Application
is	O
not	O
less	O
engaging	O
than	O
Cave	B-Application
Story	I-Application
,	O
despite	O
its	O
short	O
length	O
,	O
and	O
describes	O
it	O
as	O
"	O
a	O
three-hour	O
trip	O
that	O
demands	O
to	O
be	O
finished.	O
"	O
</s>
<s>
The	O
game	O
is	O
often	O
compared	O
to	O
Cave	B-Application
Story	I-Application
,	O
the	O
highly	O
successful	O
previous	O
game	O
created	O
by	O
Pixel	O
.	O
</s>
<s>
According	O
to	O
TouchArcade	O
,	O
Kero	B-Application
Blaster	I-Application
has	O
the	O
"	O
same	O
sort	O
of	O
off-beat	O
sense	O
of	O
humor	O
,	O
chip	O
music	O
of	O
similar	O
quality	O
and	O
composition	O
,	O
pixel	O
art	O
graphics	O
,	O
and	O
a	O
vaguely	O
similar	O
style	O
of	O
play	O
based	O
heavily	O
on	O
platforming	O
and	O
shooting.	O
"	O
</s>
<s>
However	O
,	O
where	O
Cave	B-Application
Story	I-Application
is	O
known	O
for	O
its	O
non-linear	O
exploration	O
,	O
Kero	B-Application
Blaster	I-Application
features	O
"	O
stage-based	O
run	O
and	O
gun	O
action.	O
"	O
</s>
<s>
Cave	B-Application
Story	I-Application
is	O
cited	O
to	O
be	O
similar	O
to	O
Metroid	B-Device
,	O
while	O
Kero	B-Application
Blaster	I-Application
is	O
more	O
often	O
compared	O
to	O
Contra	B-Application
and	O
Mega	B-Application
Man	I-Application
.	O
</s>
<s>
TouchArcade	O
and	O
USgamer	O
specifically	O
wrote	O
that	O
"	O
Kero	B-Application
Blaster	I-Application
is	O
not	O
Cave	B-Application
Story	I-Application
2	O
,	O
"	O
with	O
TouchArcade	O
adding	O
that	O
"	O
the	O
sooner	O
you	O
put	O
the	O
notion	O
out	O
of	O
your	O
mind	O
,	O
the	O
sooner	O
you	O
can	O
get	O
to	O
enjoying	O
an	O
extremely	O
well-crafted	O
action	O
game.	O
"	O
</s>
<s>
The	O
iOS-version	O
was	O
received	O
even	O
better	O
than	O
the	O
PC-version	O
.	O
</s>
<s>
USgamer	O
praised	O
the	O
implementation	O
of	O
the	O
control	O
scheme	O
in	O
the	O
iOS-version	O
,	O
stating	O
that	O
Pixel	O
solved	O
common	O
frustrations	O
in	O
mobile	O
games	O
"	O
in	O
an	O
eminently	O
sensible	O
manner	O
without	O
compromising	O
Kero	B-Application
Blaster	I-Application
's	O
depth	O
of	O
gameplay.	O
"	O
</s>
<s>
Game	O
Informer	O
enjoyed	O
Kero	B-Application
Blasters	I-Application
toggled	O
firing	O
directions	O
as	O
well	O
,	O
compared	O
to	O
other	O
"	O
clumsy	O
virtual	O
gamepads.	O
"	O
</s>
<s>
Furthermore	O
,	O
Game	O
Informer	O
called	O
the	O
game	O
"	O
one	O
of	O
the	O
best-playing	O
action-platformers	O
the	O
iOS	B-Application
has	O
to	O
offer	O
,	O
"	O
though	O
noted	O
that	O
the	O
game	O
was	O
n't	O
groundbreaking	O
.	O
</s>
<s>
IGN	O
Italia	O
called	O
the	O
mobile	O
control	O
scheme	O
of	O
Kero	B-Application
Blaster	I-Application
"	O
precise	O
and	O
intelligent.	O
"	O
</s>
<s>
Pocket	O
Gamer	O
called	O
the	O
game	O
"	O
fresher	O
and	O
more	O
exciting	O
than	O
much	O
of	O
the	O
content	O
on	O
the	O
App	B-Application
Store	I-Application
"	O
and	O
Gamezebo	O
stated	O
that	O
Kero	B-Application
Blasters	I-Application
"	O
compelling	O
retro-style	O
graphics	O
,	O
sharp	O
controls	O
,	O
intense	O
shooting	O
action	O
,	O
and	O
charming	O
character	O
designs	O
make	O
it	O
one	O
of	O
the	O
best	O
action	O
games	O
on	O
mobile	O
[devices].	O
 "	O
</s>
