<s>
GemCraft	B-Application
is	O
a	O
series	O
of	O
tower	B-Application
defense	I-Application
games	I-Application
created	O
by	O
Hungarian	O
studio	O
Game	O
In	O
A	O
Bottle	O
,	O
in	O
which	O
magical	O
gems	B-Application
are	O
used	O
as	O
the	O
primary	O
means	O
of	O
offense	O
and	O
defense	O
.	O
</s>
<s>
The	O
first	O
game	O
,	O
titled	O
GemCraft	B-Application
Chapter	O
One	O
:	O
The	O
Forgotten	O
(	O
also	O
known	O
simply	O
as	O
"	O
GemCraft	B-Application
"	O
)	O
,	O
is	O
a	O
tower	B-Application
defense	I-Application
flash	B-Protocol
game	I-Protocol
originally	O
released	O
on	O
June	O
26	O
,	O
2008	O
.	O
</s>
<s>
A	O
prequel	O
,	O
GemCraft	B-Application
Chapter	O
0	O
:	O
Gem	B-Application
of	O
Eternity	O
,	O
was	O
released	O
on	O
April	O
16	O
,	O
2009	O
,	O
and	O
a	O
disconnected	O
chapter	O
,	O
GemCraft	B-Application
Lost	O
Chapter	O
:	O
Labyrinth	O
,	O
was	O
released	O
February	O
17	O
,	O
2011	O
.	O
</s>
<s>
On	O
April	O
4	O
,	O
2014	O
the	O
sequel	O
to	O
the	O
first	O
game	O
GemCraft	B-Application
Chapter	O
Two	O
:	O
Chasing	O
Shadows	O
was	O
released	O
.	O
</s>
<s>
The	O
original	O
game	O
was	O
released	O
for	O
iOS	B-Operating_System
on	O
April	O
14	O
,	O
2011	O
by	O
NTT	O
Resonant	O
.	O
</s>
<s>
The	O
next	O
game	O
,	O
GemCraft	B-Application
Lost	O
Chapter	O
:	O
Frostborn	O
Wrath	O
,	O
was	O
released	O
in	O
January	O
2020	O
.	O
</s>
<s>
In	O
GemCraft	B-Application
,	O
players	O
are	O
given	O
gems	B-Application
to	O
combine	O
and	O
place	O
into	O
towers	O
.	O
</s>
<s>
Different	O
combinations	O
of	O
gems	B-Application
produce	O
different	O
effects	O
,	O
such	O
as	O
splash	O
damage	O
,	O
damage	O
over	O
time	O
,	O
and	O
critical	O
hit	O
capability	O
.	O
</s>
<s>
The	O
player	O
's	O
life	O
bar	O
and	O
magic	O
energy	O
are	O
represented	O
by	O
the	O
same	O
statistic	O
—	O
mana	B-Application
.	O
</s>
<s>
With	O
mana	B-Application
,	O
the	O
player	O
can	O
forge	O
and	O
combine	O
gems	B-Application
and	O
build	O
towers	O
,	O
trenches	O
,	O
and	O
traps	O
.	O
</s>
<s>
A	O
key	O
aspect	O
of	O
strategy	O
in	O
GemCraft	B-Application
is	O
to	O
increase	O
the	O
player	O
's	O
mana	B-Application
gain	O
to	O
high	O
levels	O
,	O
enabling	O
creation	O
of	O
stronger	O
and	O
stronger	O
gems	B-Application
.	O
</s>
<s>
Combining	O
two	O
gems	B-Application
creates	O
a	O
single	O
more	O
powerful	O
gem	B-Application
,	O
with	O
the	O
gem	B-Application
's	O
power	O
level	O
indicated	O
by	O
its	O
shape	O
.	O
</s>
<s>
Instead	O
,	O
she	O
can	O
be	O
sealed	O
away	O
by	O
a	O
powerful	O
artifact	O
known	O
as	O
a	O
"	O
Gem	B-Application
of	O
Eternity	O
"	O
,	O
but	O
it	O
can	O
only	O
contain	O
her	O
for	O
a	O
few	O
decades	O
before	O
she	O
escapes	O
,	O
and	O
each	O
time	O
she	O
escapes	O
,	O
a	O
new	O
gem	B-Application
must	O
be	O
crafted	O
in	O
order	O
to	O
capture	O
her	O
again	O
.	O
</s>
<s>
Gamezebo	O
gave	O
the	O
original	O
GemCraft	B-Application
game	O
a	O
rating	O
of	O
3.5/5	O
,	O
stating	O
:	O
"	O
While	O
GemCraft	B-Application
is	O
n't	O
a	O
revolutionary	O
effort	O
,	O
it	O
adds	O
some	O
new	O
wrinkles	O
into	O
the	O
usual	O
'	O
build	O
,	O
defend	O
,	O
build	O
 '	O
cycle	O
in	O
the	O
genre	O
re-popularized	O
by	O
Desktop	O
Tower	O
Defense.	O
"	O
</s>
