<s>
"	O
Nintendo	B-Device
hard	I-Device
"	O
refers	O
to	O
extreme	O
difficulty	O
in	O
video	O
games	O
,	O
characterized	O
by	O
trial-and-error	O
gameplay	O
and	O
limited	O
or	O
nonexistent	O
saving	O
of	O
progress	O
.	O
</s>
<s>
The	O
term	O
originated	O
with	O
Nintendo	O
Entertainment	O
System	O
(	O
NES	O
)	O
games	O
from	O
the	O
mid-1980s	O
to	O
early	O
1990s	O
,	O
such	O
as	O
Ghosts	B-Application
'	I-Application
n	I-Application
Goblins	I-Application
(	O
1986	O
)	O
,	O
Contra	B-Application
(	O
1988	O
)	O
,	O
Ninja	B-Application
Gaiden	I-Application
(	O
1988	O
)	O
,	O
and	O
Battletoads	B-Application
(	O
1991	O
)	O
.	O
</s>
<s>
The	O
Nintendo	B-Device
hard	I-Device
difficulty	O
of	O
many	O
games	O
released	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
(	O
NES	O
)	O
was	O
influenced	O
by	O
the	O
popularity	O
of	O
arcade	O
games	O
in	O
the	O
mid-1980s	O
,	O
a	O
period	O
where	O
players	O
put	O
countless	O
coins	O
in	O
machines	O
trying	O
to	O
beat	O
a	O
game	O
that	O
was	O
brutally	O
hard	O
yet	O
very	O
enjoyable	O
.	O
</s>
<s>
The	O
number	O
of	O
games	O
considered	O
Nintendo	B-Device
hard	I-Device
decreased	O
significantly	O
with	O
the	O
fourth-generation	B-Application
16-bit	I-Application
period	I-Application
of	I-Application
video	I-Application
gaming	I-Application
.	O
</s>
<s>
Later	O
Nintendo	B-Device
hard	I-Device
games	O
include	O
Super	B-Application
Star	I-Application
Wars	I-Application
(	O
1992	O
)	O
.	O
</s>
<s>
According	O
to	O
Michael	O
Enger	O
,	O
indie	O
games	O
like	O
I	B-Application
Wanna	I-Application
Be	I-Application
the	I-Application
Guy	I-Application
(	O
2007	O
)	O
and	O
Super	B-Application
Meat	I-Application
Boy	I-Application
(	O
2010	O
)	O
are	O
an	O
"	O
obvious	O
homage	O
"	O
to	O
the	O
Nintendo	B-Device
hard	I-Device
games	O
of	O
the	O
NES	O
era	O
,	O
labeled	O
as	O
"	O
masocore	O
"	O
.	O
</s>
<s>
Arcade	O
conversions	O
and	O
2D	O
platform	O
games	O
are	O
commonly	O
called	O
Nintendo	B-Device
hard	I-Device
.	O
</s>
<s>
The	O
Houston	O
Press	O
described	O
the	O
Nintendo	B-Device
hard	I-Device
era	O
as	O
a	O
period	O
where	O
games	O
"	O
universally	O
felt	O
like	O
they	O
hated	O
us	O
for	O
playing	O
them	O
"	O
.	O
</s>
<s>
GamesRadar	O
journalist	O
Maxwell	O
McGee	O
noted	O
the	O
variety	O
of	O
types	O
of	O
"	O
Nintendo	B-Device
hard	I-Device
"	O
games	O
in	O
the	O
NES	O
library	O
:	O
"	O
A	O
game	O
can	O
be	O
difficult	O
because	O
it	O
's	O
genuinely	O
hard	O
,	O
or	O
because	O
it	O
demands	O
you	O
finish	O
the	O
entire	O
adventure	O
in	O
one	O
sitting	O
.	O
</s>
<s>
Noid	O
(	O
1990	O
)	O
,	O
Silver	B-Device
Surfer	I-Device
(	O
1990	O
)	O
,	O
and	O
Teenage	B-Application
Mutant	I-Application
Ninja	I-Application
Turtles	I-Application
(	O
1989	O
)	O
garnered	O
their	O
Nintendo	B-Device
hard	I-Device
difficulty	O
"	O
for	O
all	O
the	O
wrong	O
reasons	O
"	O
.	O
</s>
<s>
Journalist	O
Michael	O
Enger	O
did	O
not	O
qualify	O
games	O
with	O
challenges	O
that	O
came	O
from	O
poorly-done	O
gameplay	O
as	O
Nintendo	B-Device
hard	I-Device
,	O
but	O
rather	O
only	O
games	O
that	O
were	O
well	O
made	O
and	O
replayable	O
but	O
still	O
extremely	O
hard	O
.	O
</s>
<s>
Punch-Out	B-Application
!!	I-Application
</s>
