<s>
Bloons	B-Device
Tower	I-Device
Defense	I-Device
(	O
also	O
known	O
as	O
Bloons	B-Device
TD	I-Device
or	O
BTD	O
)	O
is	O
a	O
series	O
of	O
tower	B-Application
defense	I-Application
games	I-Application
under	O
the	O
Bloons	B-Application
series	O
created	O
and	O
produced	O
by	O
Ninja	O
Kiwi	O
.	O
</s>
<s>
The	O
game	O
was	O
initially	O
developed	O
as	O
a	O
browser	B-Protocol
game	I-Protocol
,	O
built	O
upon	O
the	O
(	O
now	O
unusable	O
)	O
Adobe	B-Operating_System
Flash	I-Operating_System
platform	I-Operating_System
and	O
released	O
in	O
mid	O
2007	O
.	O
</s>
<s>
Later	O
games	O
in	O
the	O
series	O
expanded	O
to	O
support	O
various	O
mobile	O
platforms	B-Device
,	O
including	O
Android	B-Application
,	O
iOS	B-Application
,	O
Windows	B-Protocol
Phone	I-Protocol
,	O
PlayStation	B-Operating_System
Portable	I-Operating_System
,	O
Nintendo	B-Device
DSi	I-Device
,	O
Windows	B-Application
,	O
Linux	B-Application
and	O
MacOS	B-Application
.	O
</s>
<s>
Games	O
in	O
the	O
Bloons	B-Application
series	O
older	O
than	O
Bloons	B-Application
TD	I-Application
6	I-Application
are	O
available	O
through	O
the	O
Ninja	O
Kiwi	O
Archive	O
on	O
Steam	B-Application
.	O
</s>
<s>
In	O
the	O
game	O
,	O
players	O
attempt	O
to	O
prevent	O
Bloons	B-Application
(	O
the	O
in-game	O
name	O
for	O
balloons	O
)	O
from	O
reaching	O
the	O
end	O
of	O
a	O
set	O
course	O
by	O
placing	O
towers	O
or	O
road	O
items	O
along	O
it	O
that	O
can	O
pop	O
the	O
bloons	B-Application
in	O
a	O
variety	O
of	O
ways	O
,	O
typically	O
by	O
utilizing	O
the	O
power	O
of	O
monkeys	O
.	O
</s>
<s>
A	O
handful	O
of	O
towers	O
can	O
stall	O
the	O
bloons	B-Application
and	O
give	O
the	O
other	O
towers	O
more	O
time	O
to	O
pop	O
them	O
by	O
freezing	O
and	O
gluing	O
the	O
bloons	B-Application
.	O
</s>
<s>
Money	O
is	O
gained	O
by	O
popping	O
bloons	B-Application
,	O
completing	O
rounds	O
,	O
and	O
collecting	O
bananas	O
from	O
existing	O
banana	O
farms	O
which	O
can	O
be	O
spent	O
on	O
new	O
towers	O
,	O
upgrades	O
for	O
existing	O
ones	O
,	O
or	O
temporary	O
items	O
such	O
as	O
exploding	O
pineapples	O
and	O
road	O
spikes	O
.	O
</s>
<s>
The	O
main	O
objective	O
of	O
Bloons	B-Device
TD	I-Device
is	O
to	O
prevent	O
Bloons	B-Application
(	O
in-game	O
name	O
for	O
balloons	O
)	O
from	O
reaching	O
the	O
end	O
of	O
a	O
defined	O
track	O
on	O
a	O
map	O
that	O
consists	O
of	O
one	O
or	O
more	O
entrances	O
and	O
exits	O
for	O
the	O
bloons	B-Application
.	O
</s>
<s>
The	O
game	O
is	O
a	O
tower	B-Application
defense	I-Application
game	I-Application
and	O
thus	O
the	O
player	O
can	O
choose	O
various	O
types	O
of	O
towers	O
and	O
traps	O
to	O
place	O
around	O
the	O
track	O
in	O
order	O
to	O
defend	O
against	O
the	O
bloons	B-Application
,	O
gaining	O
1	O
in-game	O
dollar	O
for	O
every	O
layer	O
of	O
bloon	O
popped	O
.	O
</s>
<s>
The	O
bloons	B-Application
always	O
follow	O
the	O
map	O
's	O
set	O
path	O
on	O
the	O
track	O
until	O
they	O
either	O
reach	O
the	O
exit(s )	O
,	O
are	O
popped	O
,	O
or	O
are	O
moved	O
to	O
an	O
earlier	O
part	O
of	O
the	O
track	O
by	O
a	O
tower	O
's	O
ability	O
.	O
</s>
<s>
There	O
are	O
three	O
classes	O
of	O
bloons	B-Application
in	O
the	O
game	O
:	O
regular	O
(	O
unnamed	O
in	O
the	O
game	O
)	O
,	O
MOAB-class	O
and	O
Boss-class	O
.	O
</s>
<s>
As	O
of	O
Bloons	B-Application
TD	I-Application
6	I-Application
,	O
the	O
regular	O
bloons	B-Application
consist	O
of	O
:	O
red	O
,	O
blue	O
,	O
green	O
,	O
yellow	O
,	O
pink	O
,	O
black	O
,	O
white	O
,	O
lead	O
,	O
zebra	O
,	O
rainbow	O
,	O
purple	O
,	O
and	O
ceramic	O
bloons	B-Application
.	O
</s>
<s>
MOAB-class	O
bloons	B-Application
are	O
in	O
the	O
shape	O
of	O
a	O
blimp	O
and	O
consist	O
of	O
:	O
the	O
MOAB	O
(	O
Massive	O
Ornary	O
Air	O
Blimp	O
)	O
,	O
the	O
BFB	O
(	O
Brutal	O
Flying	O
Behemoth	O
)	O
,	O
the	O
DDT	O
(	O
Dark	O
Dirigible	O
Titan	O
)	O
,	O
the	O
ZOMG	O
(	O
Zeppelin	O
Of	O
Mighty	O
Gargantuaness	O
)	O
,	O
and	O
the	O
BAD	O
(	O
Big	O
Airship	O
of	O
Doom	O
)	O
.	O
</s>
<s>
In	O
later	O
versions	O
of	O
the	O
game	O
,	O
regular	O
bloons	B-Application
possess	O
sometimes	O
special	O
characteristics	O
such	O
as	O
camo	O
(	O
which	O
most	O
towers	O
cannot	O
detect	O
)	O
,	O
regrowth	O
(	O
the	O
ability	O
for	O
the	O
bloons	B-Application
to	O
slowly	O
grow	O
back	O
to	O
their	O
original	O
size	O
)	O
,	O
and	O
fortified	O
(	O
which	O
doubles	O
the	O
health	O
of	O
the	O
toughest	O
bloons	B-Application
)	O
,	O
that	O
resist	O
certain	O
tower	O
types	O
.	O
</s>
<s>
Towers	O
are	O
the	O
main	O
defensive	O
utility	O
in	O
the	O
Bloons	B-Device
TD	I-Device
series	O
.	O
</s>
<s>
Each	O
tower	O
has	O
its	O
own	O
unique	O
purpose	O
,	O
power	O
,	O
and	O
use	O
,	O
with	O
some	O
being	O
powerful	O
against	O
specific	O
bloons	B-Application
but	O
unable	O
to	O
target	O
others	O
effectively	O
.	O
</s>
<s>
Every	O
tower	O
can	O
be	O
upgraded	O
to	O
increase	O
power	O
and	O
other	O
capabilities	O
by	O
spending	O
the	O
in-game	O
currency	O
,	O
known	O
simply	O
as	O
'	O
money	O
 '	O
,	O
which	O
is	O
earned	O
by	O
popping	O
bloons	B-Application
and	O
at	O
the	O
end	O
of	O
each	O
round	O
.	O
</s>
<s>
In	O
Bloons	B-Device
TD	I-Device
4	O
onwards	O
,	O
certain	O
towers	O
such	O
as	O
banana	O
farms	O
can	O
be	O
placed	O
to	O
produce	O
additional	O
money	O
during	O
a	O
round	O
(	O
end	O
of	O
the	O
round	O
in	O
Bloons	B-Device
TD	I-Device
4	O
)	O
.	O
</s>
<s>
In	O
later	O
games	O
,	O
there	O
are	O
multiple	O
difficulty	O
levels	O
;	O
for	O
instance	O
,	O
in	O
BTD5	O
,	O
there	O
are	O
four	O
difficulty	O
levels	O
and	O
in	O
Bloons	B-Application
Monkey	O
City	O
there	O
are	O
six	O
.	O
</s>
<s>
There	O
are	O
currently	O
six	O
released	O
numbered	O
games	O
in	O
the	O
Bloons	B-Device
TD	I-Device
series	O
apart	O
from	O
various	O
add-on	O
packs	O
and	O
spin-offs	O
such	O
as	O
Bloons	B-Device
TD	I-Device
4	O
Expansion	O
and	O
Bloons	B-Application
Monkey	O
City	O
.	O
</s>
<s>
The	O
newest	O
release	O
,	O
Bloons	B-Application
TD	I-Application
6	I-Application
,	O
was	O
released	O
on	O
June	O
14	O
,	O
2018	O
.	O
</s>
<s>
The	O
series	O
was	O
retitled	O
from	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
to	O
Bloons	B-Device
TD	I-Device
in	O
2009	O
due	O
to	O
infringement	O
on	O
the	O
Tower	B-Application
Defense	I-Application
:	O
Lost	O
Earth	O
trademark	O
owned	O
by	O
Com2uS	O
.	O
</s>
<s>
There	O
are	O
currently	O
six	O
mainline	O
games	O
,	O
and	O
many	O
spin-off	O
games	O
based	O
primarily	O
on	O
the	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
series	O
.	O
</s>
<s>
Bloons	B-Device
Tower	I-Device
Defense	I-Device
is	O
the	O
first	O
game	O
in	O
the	O
BTD	O
series	O
,	O
released	O
on	O
August	O
16	O
,	O
2007	O
,	O
as	O
a	O
free	O
flash	B-Operating_System
browser	B-Protocol
game	I-Protocol
.	O
</s>
<s>
In	O
the	O
game	O
players	O
have	O
to	O
defend	O
against	O
colored	O
bloons	B-Application
with	O
monkeys	O
,	O
dart	O
throwers	O
,	O
and	O
other	O
towers	O
positioned	O
around	O
the	O
map	O
.	O
</s>
<s>
Bloons	B-Application
have	O
varying	O
numbers	O
of	O
layers	O
,	O
with	O
each	O
layer	O
being	O
pierced	O
revealing	O
the	O
layer	O
underneath	O
until	O
the	O
bloon	O
has	O
been	O
completely	O
popped	O
.	O
</s>
<s>
Bloons	B-Device
Tower	I-Device
Defense	I-Device
2	O
was	O
released	O
soon	O
after	O
in	O
October	O
2007	O
,	O
adding	O
new	O
towers	O
,	O
multiple	O
map	O
options	O
,	O
new	O
bloons	B-Application
,	O
and	O
an	O
option	O
for	O
the	O
game	O
's	O
difficulty	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
3	O
was	O
released	O
on	O
September	O
5	O
,	O
2008	O
,	O
months	O
after	O
the	O
release	O
of	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
2	O
,	O
named	O
differently	O
due	O
to	O
a	O
trademark	O
dispute	O
with	O
Com2uS	O
.	O
</s>
<s>
As	O
with	O
the	O
second	O
game	O
,	O
new	O
towers	O
,	O
bloons	B-Application
,	O
and	O
maps	O
were	O
added	O
.	O
</s>
<s>
A	O
version	O
based	O
on	O
this	O
game	O
was	O
released	O
for	O
iOS	B-Application
titled	O
Bloons	B-Device
TD	I-Device
;	O
made	O
available	O
on	O
October	O
3	O
,	O
2009	O
,	O
from	O
the	O
iOS	B-Application
App	I-Application
Store	I-Application
.	O
</s>
<s>
This	O
version	O
had	O
extra	O
maps	O
styled	O
in	O
snow	O
and	O
beach	O
themes	O
,	O
and	O
included	O
OpenFeint	B-Application
achievements	O
.	O
</s>
<s>
This	O
version	O
of	O
the	O
game	O
was	O
also	O
released	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
in	O
2010	O
.	O
</s>
<s>
Another	O
version	O
of	O
the	O
game	O
,	O
simply	O
titled	O
Bloons	B-Device
TD	I-Device
,	O
was	O
released	O
for	O
DSiWare	B-Device
in	O
2011	O
,	O
containing	O
50	O
rounds	O
to	O
complete	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
4	O
was	O
released	O
on	O
October	O
26	O
,	O
2009	O
,	O
as	O
an	O
online	O
freemium	O
game	O
with	O
a	O
proprietary	O
iOS	B-Application
version	O
released	O
on	O
December	O
7	O
,	O
2010	O
,	O
developed	O
in	O
conjunction	O
with	O
Digital	O
Goldfish	O
.	O
</s>
<s>
iPhone	B-Device
and	O
iPad	O
versions	O
of	O
this	O
title	O
have	O
been	O
purchased	O
over	O
one	O
million	O
times	O
.	O
</s>
<s>
A	O
version	O
of	O
the	O
game	O
was	O
also	O
released	O
as	O
a	O
DSiWare	B-Device
game	O
in	O
2012	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
4	O
later	O
received	O
a	O
standalone	O
"	O
expansion	O
pack	O
"	O
called	O
Bloons	B-Device
TD	I-Device
4	O
Expansion	O
which	O
added	O
the	O
Dartling	O
Gun	O
and	O
Spike	O
Factory	O
towers	O
,	O
both	O
of	O
which	O
would	O
remain	O
in	O
future	O
games	O
,	O
4	O
new	O
tracks	O
,	O
a	O
new	O
game	O
mode	O
called	O
"	O
Deflation	O
"	O
,	O
and	O
a	O
new	O
"	O
Tower	O
Specialties	O
"	O
game	O
mechanic	O
.	O
</s>
<s>
The	O
original	O
(	O
Flash	B-Operating_System
and	O
freemium	O
)	O
Bloons	B-Device
TD	I-Device
5	O
was	O
released	O
on	O
December	O
13	O
,	O
2011	O
.	O
</s>
<s>
The	O
proprietary	O
version	O
of	O
BTD5	O
was	O
released	O
on	O
iOS	B-Application
worldwide	O
on	O
November	O
15	O
,	O
2012	O
,	O
for	O
iPhones	B-Device
and	O
iPods	B-Device
with	O
improved	O
graphics	O
and	O
additional	O
upgrades	O
,	O
tracks	O
,	O
towers	O
,	O
and	O
bloon	O
types	O
.	O
</s>
<s>
On	O
November	O
19	O
,	O
2014	O
,	O
it	O
was	O
released	O
on	O
Steam	B-Application
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
5	O
Deluxe	O
was	O
released	O
on	O
January	O
27	O
,	O
2012	O
,	O
for	O
USD	O
$24.99	O
,	O
or	O
$19.99	O
during	O
the	O
promotional	O
pre-order	O
period	O
.	O
</s>
<s>
This	O
offline	O
Flash	B-Operating_System
version	O
of	O
the	O
game	O
added	O
2	O
new	O
towers	O
(	O
the	O
"	O
Bloonchipper	O
"	O
and	O
"	O
Monkey	O
Engineer	O
"	O
)	O
,	O
6	O
new	O
tracks	O
,	O
4	O
ported	O
tracks	O
from	O
Bloons	B-Device
TD	I-Device
4	O
,	O
a	O
"	O
moving	O
tower	O
platform	B-Device
"	O
mechanic	O
,	O
three	O
new	O
"	O
Special	O
Agent	O
"	O
towers	O
and	O
four	O
additional	O
"	O
Special	O
Missions	O
"	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
5	O
Deluxe	O
was	O
discontinued	O
and	O
made	O
no	O
longer	O
available	O
for	O
purchase	O
in	O
November	O
2014	O
in	O
favour	O
of	O
the	O
newer	O
Steam	B-Application
port	O
,	O
which	O
all	O
owners	O
of	O
Deluxe	O
received	O
for	O
free	O
through	O
e-mail	O
.	O
</s>
<s>
As	O
with	O
previous	O
games	O
of	O
the	O
series	O
,	O
the	O
player	O
has	O
to	O
protect	O
the	O
exit(s )	O
against	O
enemy	O
Bloons	B-Application
(	O
not	O
to	O
be	O
confused	O
with	O
Balloon	O
)	O
by	O
using	O
various	O
monkeys	O
and	O
monkey-operated	O
machines	O
placed	O
in	O
strategic	O
locations	O
to	O
fight	O
them	O
off	O
effectively	O
.	O
</s>
<s>
This	O
game	O
also	O
has	O
an	O
unlimited	O
round	O
free	O
play	O
mode	O
,	O
which	O
can	O
have	O
bloons	B-Application
with	O
increasing	O
strengths	O
until	O
the	O
Z.O.M.G	O
type	O
M.O.A.B-class	O
bloon	O
.	O
</s>
<s>
The	O
Steam/Mobile	O
version	O
has	O
two	O
special	O
mode	O
bosses	O
,	O
the	O
Dreadbloon	O
and	O
Blastapopoulos	O
.	O
</s>
<s>
The	O
iOS	B-Application
,	O
Android	B-Application
,	O
and	O
Steam	B-Application
versions	O
have	O
15	O
languages	O
:	O
English	O
,	O
Arabic	O
,	O
Danish	O
,	O
Finnish	O
,	O
French	O
,	O
German	O
,	O
Italian	O
,	O
Japanese	O
,	O
Korean	O
,	O
Norwegian	O
,	O
Portuguese	O
,	O
Russian	O
,	O
Spanish	O
,	O
Swedish	O
,	O
and	O
Turkish	O
.	O
</s>
<s>
On	O
March	O
3	O
,	O
2017	O
,	O
it	O
was	O
released	O
for	O
Microsoft	O
's	O
Xbox	B-Device
One	I-Device
,	O
later	O
releasing	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
on	O
May	O
9	O
,	O
2017	O
,	O
and	O
Nintendo	B-Application
Switch	I-Application
on	O
June	O
13	O
,	O
2018	O
,	O
all	O
of	O
which	O
cost	O
$14.99	O
USD	O
.	O
</s>
<s>
Bloons	B-Application
TD	I-Application
6	I-Application
is	O
the	O
newest	O
game	O
in	O
the	O
main	O
Bloons	B-Device
TD	I-Device
series	O
.	O
</s>
<s>
After	O
being	O
announced	O
on	O
March	O
28	O
,	O
2017	O
,	O
it	O
was	O
released	O
for	O
the	O
iOS	B-Application
App	I-Application
Store	I-Application
and	O
the	O
Google	B-Application
Play	I-Application
Store	I-Application
on	O
June	O
14	O
,	O
2018	O
.	O
</s>
<s>
A	O
Steam	B-Application
version	O
was	O
released	O
on	O
December	O
17	O
,	O
2018	O
.	O
</s>
<s>
Unlike	O
all	O
earlier	O
games	O
,	O
Bloons	B-Application
TD	I-Application
6	I-Application
does	O
not	O
have	O
a	O
Flash-based	O
counterpart	O
on	O
the	O
Ninja	O
Kiwi	O
website	O
.	O
</s>
<s>
In	O
Bloons	B-Application
TD	I-Application
6	I-Application
,	O
it	O
is	O
played	O
from	O
a	O
2.5D	O
perspective	O
,	O
as	O
opposed	O
to	O
the	O
2D	O
perspective	O
of	O
previous	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
games	O
,	O
and	O
utilizes	O
3D	O
computer	O
graphics	O
.	O
</s>
<s>
Bloons	B-Application
TD	I-Application
6	I-Application
expands	O
on	O
traditional	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
gameplay	O
with	O
"	O
Heroes	O
"	O
,	O
who	O
will	O
automatically	O
level	O
up	O
once	O
placed	O
,	O
making	O
them	O
stronger	O
as	O
the	O
game	O
progresses	O
.	O
</s>
<s>
On	O
top	O
of	O
the	O
standard	O
game	O
mode	O
,	O
Bloons	B-Application
TD	I-Application
6	I-Application
offers	O
multiple	O
additional	O
game	O
modes	O
that	O
use	O
certain	O
rules	O
and	O
restrictions	O
,	O
such	O
as	O
limiting	O
what	O
monkeys	O
the	O
player	O
can	O
use	O
or	O
making	O
Bloons	B-Application
stronger	O
in	O
some	O
aspects	O
.	O
</s>
<s>
These	O
can	O
be	O
created	O
using	O
the	O
"	O
Challenge	O
Editor	O
"	O
,	O
and	O
these	O
can	O
be	O
played	O
by	O
other	O
players	O
using	O
the	O
"	O
Challenge	O
Browser	B-Protocol
"	O
.	O
</s>
<s>
"	O
Race	O
Events	O
"	O
,	O
where	O
"	O
rounds	O
"	O
of	O
Bloons	B-Application
can	O
be	O
sent	O
early	O
to	O
obtain	O
the	O
fastest	O
time	O
possible	O
,	O
"	O
Odyssey	O
Mode	O
"	O
,	O
where	O
a	O
limited	O
selection	O
of	O
monkeys	O
must	O
be	O
used	O
to	O
complete	O
several	O
maps	O
in	O
a	O
row	O
,	O
and	O
"	O
Boss	O
Bloons	B-Application
"	O
,	O
where	O
"	O
Boss	O
Bloons	B-Application
"	O
must	O
be	O
destroyed	O
,	O
with	O
different	O
Boss	O
Bloons	B-Application
being	O
able	O
to	O
affect	O
gameplay	O
in	O
different	O
ways	O
.	O
</s>
<s>
Over	O
time	O
,	O
towers	O
from	O
Bloons	B-Device
TD	I-Device
5	O
were	O
added	O
,	O
first	O
being	O
the	O
"	O
Mortar	O
Monkey	O
"	O
in	O
update	O
6.0	O
,	O
then	O
the	O
"	O
Engineer	O
Monkey	O
"	O
in	O
update	O
12.0	O
,	O
and	O
then	O
finally	O
the	O
"	O
Dartling	O
Gun	O
"	O
,	O
renamed	O
to	O
"	O
Dartling	O
Gunner	O
"	O
in	O
update	O
22.0	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
Battles	O
was	O
released	O
on	O
December	O
12	O
,	O
2012	O
,	O
and	O
later	O
to	O
Android	B-Application
and	O
iOS	B-Application
platforms	B-Device
in-between	O
November	O
5	O
and	O
6	O
,	O
2013	O
,	O
respectively	O
.	O
</s>
<s>
On	O
April	O
20	O
,	O
2016	O
,	O
it	O
came	O
to	O
Steam	B-Application
as	O
a	O
ported	O
version	O
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
that	O
in	O
Bloons	B-Device
TD	I-Device
5	O
but	O
two	O
players	O
compete	O
against	O
one	O
another	O
in	O
one	O
of	O
four	O
game	O
modes	O
.	O
</s>
<s>
However	O
,	O
the	O
players	O
are	O
also	O
given	O
the	O
ability	O
to	O
purchase	O
additional	O
bloons	B-Application
,	O
sending	O
them	O
to	O
the	O
opponent	O
and	O
overwhelming	O
them	O
.	O
</s>
<s>
The	O
cards	O
have	O
two	O
functions	O
:	O
sending	O
bloons	B-Application
to	O
the	O
enemy	O
player	O
,	O
which	O
,	O
like	O
in	O
Assault	O
Mode	O
,	O
will	O
give	O
the	O
player	O
who	O
sends	O
the	O
bloons	B-Application
extra	O
income	O
;	O
and	O
placing	O
down	O
a	O
tower	O
.	O
</s>
<s>
Bloons	B-Application
Monkey	O
City	O
was	O
released	O
on	O
November	O
25	O
,	O
2013	O
.	O
</s>
<s>
Like	O
Bloons	B-Device
TD	I-Device
Battles	O
,	O
the	O
core	O
gameplay	O
is	O
similar	O
to	O
that	O
of	O
BTD5	O
,	O
however	O
,	O
the	O
player	O
has	O
to	O
maintain	O
a	O
city	O
,	O
expanding	O
the	O
city	O
by	O
capturing	O
bloon-infested	O
areas	O
called	O
tiles	O
.	O
</s>
<s>
One	O
primary	O
difference	O
between	O
this	O
game	O
and	O
the	O
others	O
in	O
the	O
Bloons	B-Application
series	O
is	O
the	O
addition	O
of	O
buildings	O
.	O
</s>
<s>
Buildings	O
in	O
Bloons	B-Application
Monkey	O
City	O
are	O
required	O
in	O
order	O
to	O
use	O
and	O
upgrade	O
towers	O
.	O
</s>
<s>
Some	O
buildings	O
serve	O
as	O
prerequisites	O
to	O
other	O
buildings	O
,	O
while	O
others	O
are	O
prerequisites	O
to	O
using	O
certain	O
bloons	B-Application
in	O
raids	O
.	O
</s>
<s>
This	O
game	O
was	O
released	O
on	O
browsers	O
,	O
but	O
a	O
port	O
to	O
iOS	B-Application
and	O
Android	B-Application
was	O
released	O
on	O
December	O
3	O
,	O
2014	O
,	O
and	O
February	O
18	O
,	O
2015	O
,	O
respectively	O
.	O
</s>
<s>
The	O
Steam	B-Application
version	O
was	O
released	O
on	O
April	O
10	O
,	O
2020	O
.	O
</s>
<s>
Bloons	B-Application
Adventure	B-Application
Time	I-Application
TD	O
is	O
a	O
crossover	O
game	O
between	O
Ninja	O
Kiwi	O
's	O
Bloons	B-Device
TD	I-Device
series	O
and	O
Cartoon	O
Network	O
's	O
Adventure	B-Application
Time	I-Application
series	O
that	O
was	O
announced	O
via	O
the	O
Cartoon	O
Network	O
International	O
News	O
Site	O
and	O
the	O
Ninja	O
Kiwi	O
blog	O
on	O
March	O
8	O
and	O
9	O
,	O
2018	O
,	O
respectively	O
.	O
</s>
<s>
The	O
game	O
soft	O
launched	O
on	O
July	O
14	O
,	O
2018	O
,	O
in	O
Australia	O
,	O
New	O
Zealand	O
,	O
Philippines	O
,	O
and	O
Singapore	O
on	O
Android	B-Application
and	O
iOS	B-Application
and	O
later	O
launched	O
internationally	O
.	O
</s>
<s>
The	O
game	O
features	O
characters	O
from	O
Cartoon	O
Network	O
's	O
Adventure	B-Application
Time	I-Application
such	O
as	O
Finn	O
the	O
Human	O
,	O
Jake	O
the	O
Dog	O
,	O
and	O
Princess	O
Bubblegum	O
as	O
well	O
as	O
new	O
monkey	O
heroes	O
like	O
Max	O
,	O
Cassie	O
,	O
and	O
C4	O
Charlie	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
Battles	O
2	O
,	O
the	O
sequel	O
to	O
Bloons	B-Device
TD	I-Device
Battles	O
,	O
was	O
released	O
on	O
November	O
30	O
,	O
2021	O
.	O
</s>
<s>
It	O
was	O
first	O
leaked	O
in	O
Ninja	O
Kiwi	O
's	O
YouTube	B-General_Concept
video	I-General_Concept
for	O
Bloons	B-Application
TD	I-Application
6s	I-Application
24.0	O
update	O
,	O
on	O
an	O
iPad	O
on	O
the	O
side	O
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
the	O
original	O
Bloons	B-Device
TD	I-Device
Battles	O
.	O
</s>
<s>
The	O
game	O
also	O
has	O
3-D	O
graphics	O
and	O
more	O
Bloon	O
types	O
,	O
similar	O
to	O
Bloons	B-Application
TD	I-Application
6	I-Application
.	O
</s>
<s>
Players	O
must	O
create	O
a	O
defense	O
consisting	O
of	O
monkeys	O
and	O
machines	O
that	O
protects	O
against	O
waves	O
of	O
Bloons	B-Application
,	O
which	O
otherwise	O
results	O
in	O
a	O
loss	O
of	O
lives	O
if	O
the	O
bloons	B-Application
reach	O
the	O
exit(s )	O
.	O
</s>
<s>
In	O
Bloons	B-Device
TD	I-Device
Battles	O
2	O
,	O
the	O
player	O
must	O
outsmart	O
the	O
opponent	O
by	O
sending	O
Bloons	B-Application
at	O
the	O
opponent	O
while	O
simultaneously	O
defending	O
against	O
their	O
sent	O
Bloons	B-Application
.	O
</s>
<s>
Shortly	O
after	O
the	O
release	O
of	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
,	O
Lore	O
Sjöberg	O
of	O
Wired	O
described	O
the	O
game	O
as	O
cheerful	O
and	O
addictive	O
,	O
calling	O
it	O
"	O
pop	O
culture	O
at	O
its	O
best	O
"	O
.	O
</s>
<s>
In	O
2012	O
,	O
Justin	O
Davis	O
of	O
IGN	O
described	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
as	O
one	O
of	O
the	O
best	O
free	O
tower	B-Application
defense	I-Application
games	I-Application
,	O
despite	O
its	O
"	O
amateurish	O
"	O
artwork	O
.	O
</s>
<s>
IGN	O
editor	O
Daemon	O
Hatfield	O
said	O
that	O
he	O
thought	O
Bloons	B-Device
TD	I-Device
3	O
succeeded	O
in	O
standing	O
out	O
in	O
the	O
crowded	O
genre	O
by	O
having	O
sufficient	O
core	O
game	O
mechanics	O
and	O
adding	O
an	O
individual	O
twist	O
.	O
</s>
<s>
The	O
game	O
's	O
iOS	B-Application
version	O
received	O
mixed	O
reviews	O
with	O
some	O
authors	O
praising	O
the	O
unique	O
towers	O
and	O
good	O
gameplay	O
,	O
though	O
the	O
user	O
interface	O
,	O
controls	O
,	O
and	O
lack	O
of	O
leaderboards	O
were	O
criticized	O
.	O
</s>
<s>
Eurogamer	O
's	O
Kristan	O
Reed	O
gave	O
the	O
PSP	B-Operating_System
version	O
8/10	O
,	O
describing	O
it	O
as	O
"	O
transfixing	O
"	O
,	O
though	O
he	O
said	O
that	O
the	O
music	O
appeared	O
to	O
be	O
designed	O
to	O
"	O
drive	O
you	O
insane	O
"	O
.	O
</s>
<s>
GameZebo	O
editor	O
Jim	O
Squires	O
gave	O
Bloons	B-Device
TD	I-Device
4	O
a	O
3.5/5	O
rating	O
,	O
praising	O
it	O
on	O
its	O
well	O
designed	O
maps	O
and	O
towers	O
and	O
for	O
having	O
a	O
large	O
amount	O
of	O
content	O
,	O
but	O
he	O
criticized	O
the	O
game	O
for	O
not	O
"	O
bringing	O
anything	O
new	O
to	O
the	O
genre.	O
"	O
</s>
<s>
GamePro	O
editor	O
Ryan	O
Rigney	O
gave	O
Bloons	B-Device
TD	I-Device
4	O
a	O
2/5	O
rating	O
,	O
stating	O
that	O
it	O
had	O
the	O
same	O
Bloons	B-Device
Tower	I-Device
Defense	I-Device
gameplay	O
as	O
the	O
previous	O
titles	O
,	O
and	O
"	O
the	O
screen	O
eventually	O
gets	O
so	O
hectic	O
that	O
it	O
's	O
no	O
longer	O
fun	O
to	O
play	O
"	O
;	O
an	O
issue	O
which	O
many	O
other	O
reviews	O
also	O
responded	O
negatively	O
to	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
5	O
was	O
received	O
similarly	O
to	O
its	O
previous	O
version	O
,	O
with	O
reviewers	O
commenting	O
positively	O
on	O
the	O
number	O
of	O
maps	O
,	O
towers	O
,	O
and	O
levels	O
,	O
but	O
criticising	O
the	O
lack	O
of	O
innovation	O
to	O
the	O
tower-defense	O
genre	O
and	O
performance	O
issues	O
at	O
higher	O
levels	O
.	O
</s>
<s>
Both	O
Bloons	B-Device
TD	I-Device
4	O
and	O
Bloons	B-Device
TD	I-Device
5	O
featured	O
among	O
the	O
top	O
10	O
paid	O
iPhone	B-Device
apps	O
in	O
the	O
iOS	B-Application
App	I-Application
Store	I-Application
,	O
with	O
Bloons	B-Device
TD	I-Device
4	O
selling	O
over	O
1	O
million	O
copies	O
.	O
</s>
<s>
Bloons	B-Device
TD	I-Device
remained	O
in	O
the	O
top	O
100	O
apps	O
for	O
at	O
least	O
3	O
months	O
,	O
and	O
Bloons	B-Device
TD	I-Device
5	O
was	O
the	O
8th	O
most	O
purchased	O
iPhone	B-Device
app	O
in	O
2013	O
.	O
</s>
<s>
Bloons	B-Application
TD	I-Application
6	I-Application
received	O
praise	O
for	O
its	O
extended	O
gameplay	O
variety	O
,	O
but	O
has	O
also	O
been	O
criticized	O
for	O
its	O
lack	O
of	O
replayability	O
despite	O
the	O
increased	O
number	O
of	O
unique	O
elements	O
in	O
the	O
game	O
.	O
</s>
<s>
The	O
success	O
of	O
the	O
Bloons	B-Device
TD	I-Device
franchise	O
had	O
been	O
given	O
praise	O
by	O
digital	O
investment	O
company	O
Modern	O
Times	O
Group	O
,	O
with	O
special	O
note	O
on	O
Ninja	O
Kiwi	O
's	O
continuous	O
work	O
to	O
"	O
pioneer	O
"	O
the	O
tower	B-Application
defense	I-Application
genre	O
in	O
an	O
economically	O
viable	O
but	O
quality	O
format	O
.	O
</s>
