<s>
Honkai	B-Application
:	I-Application
Star	I-Application
Rail	I-Application
(	O
)	O
is	O
an	O
upcoming	O
free-to-play	O
3D	O
role-playing	O
video	O
game	O
developed	O
and	O
published	O
by	O
HoYoverse	O
.	O
</s>
<s>
It	O
is	O
the	O
fourth	O
installment	O
in	O
the	O
Honkai	B-Application
series	O
,	O
using	O
brand	O
new	O
characters	O
along	O
with	O
alternate	O
versions	O
of	O
existing	O
characters	O
from	O
Honkai	B-Application
Impact	I-Application
3rd	I-Application
.	O
</s>
<s>
The	O
"	O
Star	O
Rail	O
"	O
mentioned	O
in	O
the	O
title	O
refers	O
to	O
an	O
interstellar	O
train	O
featured	O
in	O
the	O
game	O
,	O
while	O
Honkai	B-Application
is	O
the	O
main	O
antagonistic	O
force	O
of	O
the	O
Honkai	B-Application
series	O
,	O
which	O
seeks	O
to	O
destroy	O
civilizations	O
as	O
they	O
advance	O
.	O
</s>
<s>
The	O
word	O
honkai	B-Application
is	O
derived	O
from	O
Japanese	O
崩壊	O
(	O
rōmaji	O
:	O
hōkai	O
)	O
,	O
meaning	O
decay	O
or	O
destruction	O
.	O
</s>
<s>
Honkai	B-Application
:	I-Application
Star	I-Application
Rail	I-Application
is	O
a	O
fantasy	O
role-playing	O
video	O
game	O
in	O
which	O
has	O
players	O
control	O
one	O
of	O
up	O
to	O
four	O
characters	O
,	O
which	O
make	O
up	O
a	O
team	O
.	O
</s>
<s>
After	O
the	O
events	O
of	O
Honkai	B-Application
Impact	I-Application
3rd	I-Application
,	O
Welt	O
Yang	O
travels	O
to	O
a	O
parallel	O
universe	O
to	O
embark	O
on	O
his	O
own	O
journey	O
.	O
</s>
<s>
It	O
was	O
officially	O
revealed	O
on	O
October	O
7	O
,	O
2021	O
,	O
on	O
the	O
game	O
's	O
official	O
YouTube	B-General_Concept
channel	I-General_Concept
.	O
</s>
<s>
Honkai	B-Application
:	I-Application
Star	I-Application
Rail	I-Application
entered	O
its	O
first	O
closed	O
beta	O
testing	O
on	O
October	O
26	O
,	O
2021	O
,	O
and	O
ended	O
testing	O
on	O
November	O
1	O
,	O
2021	O
.	O
</s>
<s>
It	O
is	O
scheduled	O
for	O
release	O
on	O
April	O
26	O
,	O
2023	O
,	O
for	O
Windows	O
,	O
iOS	B-Application
and	O
Android	B-Application
,	O
with	O
ports	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
5	B-Device
coming	O
at	O
a	O
later	O
date	O
.	O
</s>
<s>
On	O
April	O
15	O
,	O
2023	O
,	O
Honkai	B-Application
:	I-Application
Star	I-Application
Rail	I-Application
announced	O
it	O
already	O
had	O
10	O
million	O
registered	O
users	O
despite	O
the	O
game	O
not	O
coming	O
out	O
yet	O
.	O
</s>
