<s>
Monster	B-Application
World	I-Application
IV	I-Application
is	O
an	O
action-adventure	O
platform	O
game	O
developed	O
by	O
Westone	O
and	O
released	O
in	O
Japan	O
by	O
Sega	O
for	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
in	O
April	O
1994	O
.	O
</s>
<s>
The	O
game	O
title	O
is	O
slightly	O
confusing	O
:	O
It	O
is	O
the	O
sixth	O
game	O
in	O
the	O
Wonder	B-Application
Boy	I-Application
series	O
and	O
the	O
fourth	O
game	O
in	O
the	O
Monster	O
World	O
subseries	O
(	O
the	O
other	O
three	O
being	O
Wonder	B-Application
Boy	I-Application
in	I-Application
Monster	I-Application
Land	I-Application
,	O
Wonder	B-Application
Boy	I-Application
:	I-Application
The	I-Application
Dragon	I-Application
's	I-Application
Trap/Curse	I-Application
and	O
Wonder	B-Application
Boy	I-Application
in	I-Application
Monster	I-Application
World/Wonder	I-Application
Boy	I-Application
V	I-Application
:	I-Application
Monster	I-Application
World	I-Application
III	I-Application
)	O
.	O
</s>
<s>
It	O
was	O
later	O
released	O
for	O
the	O
PlayStation	B-Device
2	I-Device
on	O
March	O
8	O
,	O
2007	O
,	O
as	O
part	O
of	O
the	O
Sega	O
Ages	O
2500	O
series	O
under	O
the	O
name	O
Sega	O
Ages	O
2500	O
Series	O
Vol	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
the	B-Operating_System
Wii	I-Operating_System
's	O
Virtual	B-Application
Console	I-Application
service	O
in	O
Japan	O
on	O
January	O
15	O
,	O
2008	O
.	O
</s>
<s>
An	O
English-language	O
version	O
was	O
released	O
in	O
North	O
America	O
and	O
Europe	O
for	O
Virtual	B-Application
Console	I-Application
on	O
May	O
10	O
,	O
2012	O
,	O
with	O
a	O
release	O
on	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
and	O
PlayStation	B-Device
Network	I-Device
to	O
come	O
on	O
May	O
22	O
,	O
2012	O
.	O
</s>
<s>
Monster	B-Application
World	I-Application
IV	I-Application
was	O
the	O
last	O
Wonder	B-Application
Boy	I-Application
game	O
to	O
both	O
be	O
published	O
by	O
Sega	O
and	O
developed	O
by	O
Westone	O
Bit	O
Entertainment	O
.	O
</s>
<s>
A	O
remake	O
by	O
Artdink	O
,	O
titled	O
Wonder	B-Application
Boy	I-Application
:	O
Asha	O
in	O
Monster	O
World	O
,	O
was	O
released	O
in	O
May	O
2021	O
.	O
</s>
<s>
Monster	B-Application
World	I-Application
IV	I-Application
is	O
a	O
mix	O
of	O
action-adventure	O
,	O
platforming	O
,	O
and	O
RPG	O
genres	O
,	O
in	O
which	O
the	O
player	O
traverses	O
a	O
2D	O
landscape	O
fighting	O
a	O
variety	O
of	O
monsters	O
as	O
well	O
as	O
interacting	O
with	O
non-playable	O
characters	O
.	O
</s>
<s>
She	O
previously	O
appears	O
in	O
Wonder	B-Application
Boy	I-Application
in	I-Application
Monster	I-Application
World	I-Application
but	O
has	O
no	O
major	O
role	O
.	O
</s>
<s>
Monster	B-Application
World	I-Application
IV	I-Application
was	O
included	O
as	O
one	O
of	O
the	O
42	O
games	O
on	O
the	O
Sega	B-Application
Genesis	I-Application
Mini	I-Application
.	O
</s>
<s>
In	O
August	O
2020	O
,	O
a	O
full	O
3D	O
remake	O
of	O
Monster	B-Application
World	I-Application
IV	I-Application
,	O
titled	O
Wonder	B-Application
Boy	I-Application
:	O
Asha	O
in	O
Monster	O
World	O
,	O
was	O
announced	O
.	O
</s>
<s>
The	O
game	O
,	O
which	O
features	O
3D	O
graphics	O
,	O
gameplay	O
enhancements	O
,	O
new	O
modes	O
,	O
and	O
voice	O
acting	O
,	O
was	O
developed	O
by	O
Artdink	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Nintendo	B-Application
Switch	I-Application
,	O
and	O
Steam	B-Application
.	O
</s>
<s>
It	O
was	O
released	O
in	O
May	O
2021	O
for	O
Switch	O
and	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
and	O
in	O
June	O
2021	O
for	O
PC	O
,	O
published	O
by	O
ININ	O
Games	O
in	O
the	O
West	O
and	O
G	O
Choice	O
in	O
Japan	O
.	O
</s>
