<s>
Mystic	B-Application
Heroes	I-Application
is	O
a	O
hack	B-Application
and	I-Application
slash	I-Application
video	I-Application
game	I-Application
developed	O
by	O
Koei	O
.	O
</s>
<s>
A	O
Game	B-Device
Boy	I-Device
Advance	I-Device
version	O
,	O
known	O
as	O
,	O
was	O
released	O
simultaneously	O
with	O
the	O
GameCube	B-Application
version	O
,	O
known	O
as	O
,	O
exclusively	O
in	O
Japan	O
on	O
March	O
29	O
,	O
2002	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
version	O
,	O
known	O
as	O
,	O
has	O
additional	O
characters	O
and	O
gameplay	O
modes	O
.	O
</s>
<s>
Mystic	B-Application
Heroes	I-Application
is	O
a	O
hack	B-Application
and	I-Application
slash	I-Application
similar	O
to	O
Koei	O
's	O
Dynasty	B-Application
Warriors	I-Application
.	O
</s>
<s>
There	O
are	O
four	O
playable	O
characters	O
,	O
and	O
four	O
unlockable	O
characters	O
in	O
the	O
PS2	B-Device
version	O
,	O
for	O
a	O
total	O
of	O
eight	O
.	O
</s>
<s>
Mystic	B-Application
Heroes	I-Application
received	O
above-average	O
reviews	O
on	O
both	O
platforms	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Famitsu	O
gave	O
the	O
game	O
a	O
score	O
of	O
33	O
out	O
of	O
40	O
for	O
the	O
GameCube	B-Application
version	O
,	O
32	O
out	O
of	O
40	O
for	O
the	O
PS2	B-Device
version	O
,	O
and	O
30	O
out	O
of	O
40	O
for	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
version	O
.	O
</s>
