<s>
A	O
mixed	B-General_Concept
reality	I-General_Concept
game	I-General_Concept
(	O
or	O
hybrid	B-General_Concept
reality	I-General_Concept
game	I-General_Concept
)	O
is	O
a	O
game	O
which	O
takes	O
place	O
in	O
both	O
reality	O
and	O
virtual	B-Application
reality	I-Application
simultaneously	O
.	O
</s>
<s>
There	O
is	O
equivalence	O
in	O
definitions	O
pertaining	O
to	O
their	O
existence	O
in	O
mixed	B-General_Concept
reality	I-General_Concept
.	O
</s>
<s>
Given	O
the	O
definition	O
for	O
mixed	B-General_Concept
reality	I-General_Concept
by	O
Paul	O
Milgram	O
and	O
Fumio	O
Kishino	O
for	O
the	O
virtuality	B-General_Concept
continuum	I-General_Concept
,	O
virtual	B-Application
reality	I-Application
games	O
are	O
not	O
mixed	B-General_Concept
reality	I-General_Concept
games	I-General_Concept
,	O
because	O
they	O
take	O
place	O
only	O
in	O
virtual	B-Application
reality	I-Application
.	O
</s>
<s>
Souza	O
de	O
Silva	O
and	O
Sutko	O
state	O
that	O
pervasive	O
games	O
are	O
a	O
subset	O
of	O
hybrid	B-General_Concept
reality	I-General_Concept
games	I-General_Concept
.	O
</s>
