<s>
Most	O
of	O
the	O
games	O
have	O
been	O
developed	O
by	O
Namco	O
Bandai	O
Games	O
and	O
have	O
been	O
released	O
for	O
a	O
variety	O
of	O
home	B-Device
and	O
handheld	B-Application
game	I-Application
consoles	I-Application
,	O
such	O
as	O
Bandai	O
's	O
own	O
WonderSwan	B-Operating_System
.	O
</s>
<s>
Despite	O
being	O
marketed	O
as	O
part	O
of	O
the	O
Digimon	O
World	O
series	O
in	O
North	O
America	O
,	O
Digimon	B-Device
World	I-Device
Championship	I-Device
and	O
Digimon	B-Device
World	I-Device
Data	I-Device
Squad	I-Device
are	O
standalone	O
games	O
.	O
</s>
