<s>
It	O
is	O
the	O
15th	O
installment	O
in	O
the	O
Touhou	B-Application
Project	I-Application
series	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
Steam	B-Application
on	O
April	O
1	O
,	O
2019	O
.	O
</s>
<s>
The	O
gameplay	O
fundamentals	O
of	O
Legacy	B-Application
of	I-Application
Lunatic	I-Application
Kingdom	I-Application
are	O
identical	O
to	O
previous	O
games	O
in	O
the	O
series	O
:	O
the	O
player	O
fights	O
various	O
common	O
enemies	O
in	O
a	O
stage	O
with	O
potential	O
for	O
a	O
midboss	O
encounter	O
,	O
and	O
then	O
a	O
boss	O
,	O
who	O
use	O
Spell	O
Cards	O
to	O
attack	O
the	O
player	O
by	O
firing	O
bullets	O
in	O
specific	O
patterns	O
.	O
</s>
<s>
In	O
Legacy	B-Application
of	I-Application
Lunatic	I-Application
Kingdom	I-Application
,	O
shot	O
types	O
have	O
been	O
tied	O
to	O
characters	O
,	O
and	O
cannot	O
be	O
chosen	O
.	O
</s>
<s>
However	O
,	O
Legacy	B-Application
of	I-Application
Lunatic	I-Application
Kingdom	I-Application
also	O
differs	O
greatly	O
from	O
the	O
previous	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
Legacy	O
Mode	O
retains	O
the	O
set	O
lives	O
system	O
of	O
previous	O
Touhou	B-Application
games	I-Application
,	O
with	O
the	O
opportunity	O
to	O
gain	O
more	O
,	O
and	O
to	O
use	O
continues	O
,	O
while	O
Pointdevice	O
Mode	O
does	O
not	O
use	O
lives	O
at	O
all	O
,	O
instead	O
opting	O
for	O
a	O
"	O
chapter	O
"	O
system	O
,	O
which	O
act	O
as	O
checkpoints	O
.	O
</s>
<s>
As	O
such	O
,	O
the	O
gameplay	O
loop	O
has	O
more	O
in	O
common	O
with	O
Shoot	B-Application
the	I-Application
Bullet	I-Application
then	O
anything	O
else	O
.	O
</s>
<s>
The	O
game	O
was	O
balanced	O
around	O
Pointdevice	O
Mode	O
--	O
being	O
the	O
intended	O
way	O
to	O
play	O
the	O
game	O
,	O
and	O
as	O
such	O
the	O
game	O
is	O
arguably	O
far	O
harder	O
on	O
Legacy	O
Mode	O
than	O
any	O
other	O
Touhou	B-Application
game	O
in	O
the	O
series	O
.	O
</s>
<s>
The	O
main	O
mechanic	O
change	O
other	O
than	O
Pointdevice	O
Mode	O
introduced	O
in	O
Legacy	B-Application
of	I-Application
Lunatic	I-Application
Kingdom	I-Application
is	O
an	O
expanded	O
graze	O
system	O
.	O
</s>
<s>
In	O
this	O
time	O
,	O
Chang'e	O
drinks	O
the	O
Hourai	B-Application
Elixir	I-Application
,	O
a	O
forbidden	O
elixir	O
that	O
forever	O
immortalizes	O
the	O
user	O
,	O
tainting	O
them	O
with	O
the	O
concepts	O
of	O
life	O
and	O
death	O
by	O
its	O
absence	O
,	O
and	O
becomes	O
imprisoned	O
by	O
the	O
Lunarians	O
for	O
the	O
eternal	O
crime	O
of	O
ingesting	O
it	O
.	O
</s>
<s>
Some	O
time	O
after	O
the	O
events	O
of	O
Imperishable	B-Application
Night	I-Application
,	O
Junko	O
invades	O
the	O
Moon	O
with	O
an	O
army	O
of	O
fairies	O
,	O
with	O
the	O
help	O
of	O
her	O
friend	O
Hecatia	O
Lapislazuli	O
,	O
the	O
goddess	O
of	O
Hell	O
,	O
to	O
search	O
for	O
Chang'e	O
.	O
</s>
<s>
In	O
the	O
present	O
day	O
,	O
the	O
Lunarian	O
fugitives	O
Kaguya	O
Houraisan	O
and	O
her	O
servant	O
and	O
fellow	O
goddess	O
Eirin	O
Yagokoro	O
discuss	O
the	O
potential	O
Lunarian	O
invasion	O
in	O
their	O
home	O
of	O
Eientei	B-Application
,	O
and	O
Eirin	O
conjures	O
a	O
special	O
medicine	O
,	O
the	O
Ultramarine	O
Orb	O
Elixir	O
,	O
which	O
temporarily	O
removes	O
the	O
impurity	O
of	O
death	O
and	O
allows	O
the	O
user	O
to	O
experience	O
the	O
immediate	O
future	O
.	O
</s>
<s>
Eirin	O
then	O
asks	O
Reisen	O
Udongein	O
Inaba	O
,	O
a	O
fellow	O
moon	O
rabbit	O
refugee	O
who	O
serves	O
as	O
the	O
bodyguard	O
of	O
Eientei	B-Application
,	O
to	O
deliver	O
the	O
elixir	O
to	O
Reimu	O
Hakurei	O
,	O
Marisa	O
Kirisame	O
,	O
and	O
Sanae	O
Kochiya	O
,	O
also	O
telling	O
her	O
to	O
drink	O
it	O
for	O
herself	O
.	O
</s>
<s>
Meanwhile	O
,	O
a	O
metallic	O
spider-like	O
rover	O
from	O
the	O
Moon	O
crashes	O
into	O
the	O
Youkai	B-Application
Mountain	I-Application
and	O
starts	O
to	O
roam	O
around	O
,	O
purifying	O
any	O
land	O
it	O
passes	O
by	O
and	O
leaving	O
no	O
signs	O
of	O
life	O
.	O
</s>
<s>
While	O
flying	O
at	O
the	O
foot	O
of	O
the	O
Youkai	B-Application
Mountain	I-Application
,	O
the	O
heroine	O
encounters	O
the	O
frontline	O
moon	O
rabbit	O
troops	O
of	O
the	O
Eagle	O
Ravi	O
,	O
a	O
Lunarian	O
Earth	O
Recon	O
Unit	O
sent	O
to	O
purify	O
the	O
Earth	O
,	O
and	O
encounters	O
the	O
low	O
ranking	O
infiltrator	O
Seiran	O
,	O
who	O
lets	O
slip	O
that	O
their	O
forward	O
base	O
is	O
present	O
at	O
the	O
mountain	O
's	O
lake	O
.	O
</s>
<s>
After	O
defeating	O
Junko	O
,	O
either	O
the	O
events	O
of	O
the	O
Extra	O
stage	O
happen	O
or	O
the	O
Lunarians	O
start	O
to	O
inhabit	O
Gensokyo	O
against	O
Eientei	B-Application
's	O
wishes	O
.	O
</s>
<s>
The	O
heroine	O
battles	O
Junko	O
and	O
Hecatia	O
simultaneously	O
,	O
and	O
once	O
both	O
are	O
defeated	O
,	O
they	O
finally	O
yield	O
with	O
their	O
plan	O
and	O
ask	O
to	O
be	O
escorted	O
to	O
Eientei	B-Application
to	O
meet	O
Eirin	O
,	O
to	O
which	O
the	O
heroine	O
accepts	O
.	O
</s>
<s>
ZUN	O
stated	O
that	O
he	O
was	O
inspired	O
by	O
games	O
such	O
as	O
I	B-Application
Wanna	I-Application
Be	I-Application
The	I-Application
Guy	I-Application
,	O
which	O
feature	O
extreme	O
difficulty	O
combined	O
with	O
the	O
ability	O
to	O
freely	O
retry	O
each	O
stage	O
.	O
</s>
