<s>
Koichi	O
Nakamura	O
,	O
founder	O
of	O
Chunsoft	O
and	O
co-creator	O
of	O
the	O
Dragon	B-Application
Quest	I-Application
series	O
,	O
conceived	O
the	O
Mystery	O
Dungeon	O
series	O
as	O
Chunsoft	O
's	O
first	O
original	O
work	O
,	O
basing	O
the	O
design	O
on	O
the	O
game	O
Rogue	B-Application
.	O
</s>
<s>
The	O
first	O
game	O
,	O
Torneko	B-Application
no	I-Application
Daibōken	I-Application
:	I-Application
Fushigi	I-Application
no	I-Application
Dungeon	I-Application
(	O
1993	O
)	O
,	O
stars	O
Torneko	O
,	O
a	O
shopkeeper	O
character	O
from	O
Chunsoft	O
's	O
Dragon	B-Application
Quest	I-Application
IV	I-Application
.	O
</s>
<s>
The	O
games	O
of	O
the	O
Mystery	O
Dungeon	O
series	O
can	O
be	O
largely	O
divided	O
into	O
five	O
groups	O
:	O
those	O
related	O
to	O
the	O
Dragon	B-Application
Quest	I-Application
series	O
;	O
the	O
Shiren	B-Application
the	I-Application
Wanderer	I-Application
series	O
;	O
those	O
related	O
to	O
the	O
Chocobo	O
series	O
,	O
itself	O
a	O
spin-off	O
of	O
the	O
Final	B-Application
Fantasy	I-Application
series	O
;	O
those	O
related	O
to	O
the	O
Pokémon	B-Application
franchise	O
;	O
and	O
individual	O
spin-off	O
games	O
of	O
other	O
franchises	O
.	O
</s>
<s>
Of	O
them	O
,	O
the	O
Pokémon	B-Application
games	O
have	O
had	O
the	O
biggest	O
impact	O
,	O
with	O
the	O
first	O
game	O
in	O
the	O
subseries	O
selling	O
millions	O
of	O
copies	O
.	O
</s>
