<s>
Second	B-Application
Reality	I-Application
(	O
originally	O
titled	O
Unreal	O
]	O
[	O
-	O
The	O
2nd	O
Reality	O
)	O
is	O
an	O
IBM	O
PC	O
compatible	O
demo	O
created	O
by	O
Future	O
Crew	O
.	O
</s>
<s>
It	O
debuted	O
at	O
the	O
Assembly	B-Language
1993	O
demoparty	O
on	O
July	O
30	O
,	O
1993	O
,	O
where	O
it	O
was	O
entered	O
into	O
the	O
PC	O
demo	O
competition	O
,	O
and	O
finished	O
in	O
first	O
place	O
with	O
its	O
demonstration	O
of	O
2D	O
and	O
3D	O
computer	O
graphics	O
rendering	O
.	O
</s>
<s>
Its	O
source	O
code	O
was	O
released	O
in	O
a	O
GitHub	B-Application
repository	O
as	O
public	B-Application
domain	I-Application
software	I-Application
using	O
the	B-License
Unlicense	I-License
on	O
the	O
20th	O
anniversary	O
of	O
the	O
release	O
on	O
1	O
August	O
2013	O
.	O
</s>
<s>
Many	O
techniques	O
used	O
by	O
other	O
demos	O
,	O
including	O
Future	O
Crew	O
's	O
own	O
earlier	O
work	O
,	O
were	O
refined	O
and	O
reused	O
in	O
Second	B-Application
Reality	I-Application
.	O
</s>
<s>
The	O
demo	O
had	O
a	O
soundtrack	O
of	O
Techno	O
music	O
composed	O
by	O
Skaven	O
and	O
Purple	O
Motion	O
using	O
ScreamTracker	B-Application
3	I-Application
.	O
</s>
<s>
After	O
the	O
text	O
has	O
floated	O
by	O
,	O
again	O
the	O
scene	O
changes	O
to	O
display	O
a	O
demonic-like	O
human	O
head	O
(	O
clearly	O
inspired	O
by	O
the	O
mascot	O
Violent	O
Mind	O
of	O
the	O
band	O
Kreator	O
)	O
with	O
a	O
pentagram	B-Application
engraved	O
on	O
his	O
forehead	O
.	O
</s>
<s>
Because	O
of	O
a	O
bug	B-Error_Name
,	O
this	O
part	O
will	O
crash	O
if	O
the	O
demo	O
is	O
installed	O
in	O
a	O
directory	O
with	O
the	O
complete	O
path	O
length	O
exceeding	O
30	O
characters	O
.	O
</s>
<s>
The	O
scene	O
was	O
rendered	O
using	O
Future	O
Crew	O
's	O
homemade	O
ray	B-Algorithm
tracing	I-Algorithm
software	O
.	O
</s>
<s>
This	O
scene	O
is	O
rendered	O
using	O
a	O
Voxel	B-Algorithm
landscape	O
rendering	O
technique	O
.	O
</s>
<s>
The	O
image	O
filename	O
is	O
named	O
"	O
ICEKNGDM.LBM	O
"	O
(	O
"	O
Ice	O
Kingdom	O
Interleaved	B-Operating_System
Bitmap	I-Operating_System
"	O
)	O
,	O
</s>
<s>
In	O
2013	O
a	O
reverse	O
engineering	O
analysis	O
of	O
SR	O
with	O
the	O
now	O
available	O
source	O
code	O
revealed	O
a	O
design	O
which	O
is	O
built	O
around	O
two	O
characteristical	O
demoscene	O
paradigms	O
:	O
Teamwork	B-Protocol
and	O
Obfuscation	O
.	O
</s>
<s>
Internally	O
the	O
demo	O
consists	O
of	O
23	O
separated	O
parts	O
which	O
allowed	O
independent	O
,	O
parallel	O
development	O
and	O
free	O
selection	O
of	O
programming	O
language	O
(	O
assembly	B-Language
,	O
C	B-Language
and	O
Turbo	B-Application
Pascal	I-Application
)	O
and	O
development	O
tools	O
.	O
</s>
<s>
The	O
analysis	O
of	O
the	O
source	O
code	O
also	O
revealed	O
that	O
the	O
long-standing	O
and	O
popular	O
speculation	O
that	O
SR	O
uses	O
its	O
own	O
memory	B-General_Concept
manager	I-General_Concept
which	O
accesses	O
the	O
MMU	B-General_Concept
directly	O
is	O
not	O
true	O
;	O
in	O
fact	O
SR	O
uses	O
standard	O
DOS	O
memory	B-General_Concept
management	I-General_Concept
functions	O
.	O
</s>
<s>
The	O
demo	O
runs	O
best	O
on	O
an	O
Intel	B-General_Concept
80486	I-General_Concept
PC	O
with	O
a	O
Gravis	B-Application
Ultrasound	I-Application
or	O
a	O
Sound	B-Application
Blaster	I-Application
Pro	I-Application
(	O
or	O
register-compatible	O
clone	O
)	O
.	O
</s>
<s>
As	O
the	O
demo	O
had	O
in	O
the	O
original	O
released	O
version	O
a	O
slow	O
down	O
bug	B-Error_Name
,	O
a	O
patch	O
was	O
released	O
later	O
.	O
</s>
<s>
While	O
the	O
demo	O
code	O
remains	O
freely	O
available	O
on	O
numerous	O
Internet	O
sites	O
and	O
is	O
now	O
hosted	O
with	O
source	O
code	O
on	O
GitHub	B-Application
,	O
it	O
is	O
difficult	O
or	O
impossible	O
to	O
run	O
Second	B-Application
Reality	I-Application
directly	O
on	O
a	O
modern	O
PC	O
.	O
</s>
<s>
The	O
demo	O
accesses	O
video	O
and	O
sound	O
hardware	O
directly	O
(	O
using	O
its	O
own	O
built-in	O
device	B-Application
drivers	I-Application
)	O
which	O
is	O
incompatible	O
with	O
current	O
OSs	O
,	O
and	O
many	O
of	O
the	O
timings	O
in	O
the	O
demo	O
do	O
not	O
scale	O
up	O
to	O
modern	O
CPU	B-General_Concept
speeds	O
.	O
</s>
<s>
To	O
run	O
this	O
demo	O
(	O
with	O
minor	O
glitches	O
)	O
on	O
a	O
modern	O
machine	O
running	O
a	O
modern	O
OS	O
like	O
Windows	B-Application
or	O
Linux	B-Application
,	O
one	O
can	O
use	O
DOSBox	B-Application
.	O
</s>
<s>
DOSBox	B-Application
is	O
capable	O
of	O
emulating	B-Application
the	O
exotic	O
video	O
modes	O
and	O
the	O
Gravis	B-Application
Ultrasound	I-Application
preferred	O
by	O
Second	B-Application
Reality	I-Application
,	O
and	O
can	O
be	O
configured	O
to	O
the	O
33MHz	O
recommended	O
on	O
the	O
demo	O
's	O
configuration	O
screen	O
for	O
optimal	O
viewing	O
.	O
</s>
<s>
Second	B-Application
Reality	I-Application
C64	O
(	O
)	O
by	O
Smash	O
Designs	O
–	O
Probably	O
the	O
most	O
well-known	O
and	O
most	O
impressive	O
remix	O
,	O
being	O
a	O
faithful	O
adaptation	O
of	O
the	O
original	O
demo	O
for	O
the	O
Commodore	O
64	O
platform	O
.	O
</s>
<s>
Flash	O
Reality	O
(	O
)	O
by	O
The	O
Scampers	O
–	O
A	O
Macromedia	B-Operating_System
Flash	I-Operating_System
remix	O
,	O
with	O
many	O
scenes	O
recreated	O
using	O
the	O
Actionscript	B-Operating_System
programming	O
language	O
.	O
</s>
<s>
SHizZLE	O
(	O
)	O
–	O
A	O
demo	O
on	O
the	O
Pokémon	B-Device
Mini	I-Device
,	O
which	O
contains	O
some	O
parts	O
of	O
Second	B-Application
Reality	I-Application
.	O
</s>
<s>
Rocky	O
Reality	O
(	O
)	O
by	O
Bedrock	O
Bros	O
.	O
-	O
a	O
port	O
done	O
for	O
the	O
Pebble	B-Device
Smartwatch	I-Device
.	O
</s>
