<s>
is	O
a	O
1986	O
eroge	B-Application
mahjong	B-Application
arcade	O
video	O
game	O
developed	O
and	O
published	O
exclusively	O
in	O
Japan	O
by	O
Toaplan	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
the	O
players	O
face	O
off	O
against	O
a	O
group	O
of	O
three	O
sisters	O
in	O
a	O
series	O
of	O
mahjong	B-Application
matches	O
.	O
</s>
<s>
As	O
of	O
2019	O
,	O
the	O
rights	O
to	O
the	O
title	O
is	O
owned	O
by	O
Tatsujin	B-Application
,	O
a	O
company	O
founded	O
in	O
2017	O
by	O
former	O
Toaplan	O
member	O
Masahiro	O
Yuge	O
and	O
now-affiliate	O
of	O
Japanese	O
arcade	O
manufacturer	O
exA-Arcadia	O
alongside	O
many	O
other	O
Toaplan	O
IPs	O
.	O
</s>
<s>
Mahjong	B-Application
Sisters	I-Application
is	O
a	O
tile-based	O
japanese	B-Application
mahjong	I-Application
eroge	B-Application
game	O
where	O
players	O
compete	O
against	O
three	O
sisters	O
with	O
the	O
main	O
objective	O
of	O
winning	O
the	O
matches	O
by	O
getting	O
the	O
girls	O
undressed	O
.	O
</s>
<s>
As	O
far	O
as	O
gameplay	O
goes	O
,	O
the	O
game	O
plays	O
like	O
other	O
mahjong	B-Application
titles	O
released	O
at	O
the	O
time	O
,	O
as	O
the	O
goal	O
of	O
players	O
is	O
to	O
take	O
points	O
from	O
other	O
players	O
by	O
drawing	O
and	O
discarding	O
tiles	O
until	O
a	O
winning	O
hand	O
is	O
made	O
.	O
</s>
<s>
During	O
gameplay	O
,	O
players	O
needs	O
to	O
claim	O
mahjongs	B-Application
in	O
order	O
to	O
get	O
the	O
girls	O
with	O
taking	O
off	O
their	O
clothes	O
.	O
</s>
<s>
The	O
game	B-Application
is	I-Application
over	I-Application
once	O
the	O
players	O
has	O
zero	O
points	O
or	O
less	O
in	O
their	O
favor	O
,	O
unless	O
more	O
credits	O
are	O
inserted	O
into	O
the	O
arcade	O
machine	O
to	O
continue	O
playing	O
.	O
</s>
<s>
Mahjong	B-Application
Sisters	I-Application
was	O
released	O
only	O
in	O
arcades	O
across	O
Japan	O
by	O
Toaplan	O
in	O
1986	O
.	O
</s>
<s>
According	O
to	O
former	O
Toaplan	O
composer	O
Tatsuya	O
Uemura	O
in	O
a	O
2009	O
interview	O
with	O
Japanese	O
publication	O
Floor	O
25	O
,	O
the	O
code	O
was	O
based	O
on	O
the	O
company	O
's	O
previous	O
mahjong	B-Application
releases	O
;	O
Jongō	O
and	O
Jongkyō	O
.	O
</s>
<s>
In	O
more	O
recent	O
years	O
,	O
the	O
rights	O
to	O
Mahjong	B-Application
Sisters	I-Application
and	O
many	O
other	O
IPs	O
from	O
Toaplan	O
are	O
now	O
owned	O
by	O
Tatsujin	B-Application
,	O
a	O
company	O
named	O
after	O
Truxton'''s	O
Japanese	O
title	O
that	O
was	O
founded	O
in	O
2017	O
by	O
former	O
Toaplan	O
employee	O
Masahiro	O
Yuge	O
,	O
who	O
are	O
now	O
affiliated	O
with	O
arcade	O
manufacturer	O
exA-Arcadia	O
.	O
</s>
