<s>
UltraStar	B-Application
is	O
a	O
clone	O
of	O
SingStar	B-Device
,	O
a	O
music	B-Application
video	I-Application
game	I-Application
by	O
Polish	O
developer	O
Patryk	O
"	O
Covus5	O
"	O
Cebula	O
.	O
</s>
<s>
UltraStar	B-Application
lets	O
one	O
or	O
several	O
players	O
score	O
points	O
by	O
singing	O
along	O
to	O
a	O
song	O
or	O
music	O
video	O
and	O
match	O
the	O
pitch	O
of	O
the	O
original	O
song	O
.	O
</s>
<s>
UltraStar	B-Application
displays	O
lyrics	O
as	O
well	O
as	O
the	O
correct	O
notes	O
similar	O
to	O
a	O
piano	O
roll	O
.	O
</s>
<s>
On	O
top	O
of	O
the	O
correct	O
notes	O
UltraStar	B-Application
displays	O
the	O
pitch	O
recorded	O
from	O
the	O
players	O
.	O
</s>
<s>
UltraStar	B-Application
allows	O
several	O
people	O
to	O
play	O
simultaneously	O
by	O
connecting	O
several	O
microphones	O
possibly	O
to	O
several	O
sound	B-Device
cards	I-Device
.	O
</s>
<s>
To	O
add	O
a	O
song	O
to	O
UltraStar	B-Application
,	O
a	O
file	O
with	O
notes	O
and	O
lyrics	O
is	O
required	O
,	O
together	O
with	O
an	O
audio	O
file	O
.	O
</s>
<s>
UltraStar	B-Application
comes	O
preloaded	O
with	O
a	O
short	O
sample	O
from	O
Nine	O
Inch	O
Nails	O
hit	O
"	O
Discipline	O
"	O
from	O
The	O
Slip	O
album	O
.	O
</s>
<s>
UltraStar	B-Application
is	O
released	O
under	O
Freeware	B-License
License	O
.	O
</s>
<s>
Very	O
old	O
versions	O
were	O
available	O
under	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
and	O
most	O
game	O
forks	B-Application
were	O
initially	O
based	O
on	O
the	O
old	O
code	O
.	O
</s>
<s>
The	O
original	O
UltraStar	B-Application
is	O
programmed	O
in	O
Kylix/Delphi	O
and	O
made	O
for	O
Microsoft	B-Application
Windows	I-Application
operating-system	O
.	O
</s>
<s>
There	O
are	O
also	O
ports	O
available	O
in	O
C++	B-Language
for	O
other	O
operating-systems	O
such	O
as	O
Linux	B-Application
,	O
BSD	B-Operating_System
and	O
other	O
UNIX	B-Application
platforms	O
.	O
</s>
<s>
UltraStar	B-Application
Deluxe	I-Application
was	O
started	O
as	O
a	O
modification	O
of	O
UltraStar	B-Application
.	O
</s>
<s>
UltraStar	B-Application
Deluxe	I-Application
is	O
different	O
in	O
three	O
key	O
ways	O
from	O
UltraStar	B-Application
.	O
</s>
<s>
Significant	O
effort	O
has	O
been	O
put	O
into	O
improving	O
reliability	O
by	O
repairing	O
bugs	B-Error_Name
.	O
</s>
<s>
Many	O
effects	O
are	O
also	O
based	O
on	O
SingStar	B-Device
on	O
PS3	B-Operating_System
,	O
Vocaluxe	O
and	O
Performous	O
.	O
</s>
<s>
More	O
audio	O
and	O
video	O
formats	O
are	O
supported	O
,	O
such	O
as	O
DivX	B-Application
,	O
XviD	B-Algorithm
,	O
FLV	B-Operating_System
,	O
Avi	O
and	O
WMV	B-Device
.	O
</s>
<s>
UltraStar	B-Application
Deluxe	I-Application
is	O
written	O
in	O
Object	B-Language
Pascal	I-Language
,	O
and	O
compiles	O
with	O
Delphi	B-Language
,	O
Free	B-Operating_System
Pascal	I-Operating_System
and	O
Lazarus	B-Language
.	O
</s>
<s>
As	O
of	O
version	O
1.0.1	O
UltraStar	B-Application
Deluxe	I-Application
runs	O
on	O
Linux	B-Application
via	O
Wine	B-Application
.	O
</s>
<s>
As	O
of	O
version	O
1.1	O
UltraStar	B-Application
Deluxe	I-Application
runs	O
on	O
Linux	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
natively	O
.	O
</s>
<s>
Some	O
(	O
new	O
)	O
developers	O
started	O
the	O
UltraStar	B-Application
Deluxe	I-Application
World	O
Party	O
mod	O
and	O
the	O
Challenge	O
&	O
Medley	O
mod	O
.	O
</s>
<s>
These	O
projects	O
started	O
as	O
forks	B-Application
from	O
UltraStar	B-Application
Deluxe	I-Application
1.1	O
sourcecode	O
and	O
eventually	O
developed	O
many	O
new	O
features	O
and	O
bugfixes	O
.	O
</s>
<s>
As	O
of	O
version	O
1.3	O
UltraStar	B-Application
Deluxe	I-Application
uses	O
SDL2	O
,	O
ffmpeg	B-Library
2.8	O
,	O
compiles	O
with	O
freepascal	B-Operating_System
3	O
and	O
runs	O
natively	O
on	O
all	O
current	O
versions	O
of	O
Windows	B-Application
,	O
Linux	B-Application
and	O
OS	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
This	O
version	O
merged	O
the	O
various	O
forks	B-Application
of	O
the	O
game	O
and	O
was	O
intended	O
to	O
revive	O
free/libre	O
open	O
source	O
development	O
of	O
the	O
game	O
.	O
</s>
<s>
The	O
version	O
"	O
2017.08.0	O
"	O
released	O
at	O
2017-08-08	O
adds	O
support	O
for	O
ffmpeg	B-Library
up	O
to	O
3.3	O
.	O
</s>
<s>
The	O
project	O
began	O
as	O
rewrite	O
of	O
the	O
UltraStar	B-Application
singing	O
game	O
in	O
October	O
2006	O
,	O
using	O
C++	B-Language
and	O
targeting	O
Linux	B-Application
.	O
</s>
<s>
A	O
few	O
months	O
later	O
work	O
on	O
the	O
dance	B-Application
game	I-Application
feature	O
began	O
and	O
even	O
though	O
it	O
is	O
not	O
yet	O
complete	O
,	O
the	O
feature	O
is	O
already	O
available	O
on	O
the	O
development	O
version	O
of	O
the	O
game	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
known	O
as	O
UltraStar-NG	O
,	O
but	O
the	O
name	O
was	O
changed	O
in	O
version	O
0.3	O
in	O
anticipation	O
of	O
adding	O
other	O
instruments	O
and	O
to	O
avoid	O
confusion	O
as	O
the	O
game	O
is	O
not	O
a	O
fork	B-Application
of	O
UltraStar	B-Application
.	O
</s>
<s>
Also	O
,	O
since	O
version	O
0.3	O
the	O
graphics	O
rendering	O
is	O
based	O
on	O
OpenGL	B-Application
for	O
high	O
performance	O
even	O
on	O
slower	O
machines	O
,	O
with	O
full	O
effects	O
,	O
as	O
long	O
as	O
any	O
OpenGL	B-Application
support	O
is	O
available	O
.	O
</s>
<s>
Various	O
background	O
video	O
formats	O
are	O
supported	O
using	O
FFmpeg	B-Library
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
SingStar	B-Device
:	O
the	O
game	O
analyzes	O
each	O
singer	O
's	O
pitch	O
and	O
gives	O
scores	O
based	O
on	O
how	O
precisely	O
the	O
song	O
was	O
performed	O
.	O
</s>
<s>
Performous	O
does	O
not	O
attempt	O
to	O
clone	O
SingStar	B-Device
but	O
rather	O
has	O
unique	O
features	O
such	O
as	O
scrolling	O
notes	O
and	O
precise	O
singing	O
pitch	O
display	O
as	O
a	O
wave	O
drawn	O
on	O
screen	O
.	O
</s>
<s>
On	O
Linux	B-Application
the	O
game	O
autodetects	O
any	O
connected	O
SingStar	B-Device
microphones	O
and	O
uses	O
them	O
automatically	O
.	O
</s>
<s>
webcams	O
or	O
analog	O
microphones	O
connected	O
to	O
sound	B-Device
cards	I-Device
)	O
a	O
best-effort	O
detection	O
is	O
done	O
.	O
</s>
<s>
Songs	O
need	O
to	O
be	O
supplied	O
in	O
UltraStar	B-Application
or	O
Frets	B-Application
on	I-Application
Fire	I-Application
format	O
.	O
</s>
<s>
Performous	O
comes	O
with	O
a	O
tool	O
named	O
'	O
ss_extract	O
 '	O
,	O
for	O
converting	O
SingStar	B-Device
DVDs	O
into	O
UltraStar	B-Application
format	O
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
Guitar	B-Application
Hero	I-Application
or	O
Rock	B-Application
Band	I-Application
:	O
a	O
guitar	O
controller	O
is	O
used	O
and	O
the	O
player	O
will	O
need	O
to	O
match	O
the	O
notes	O
.	O
</s>
<s>
Performous	O
detects	O
any	O
connected	O
Guitar	B-Application
Hero	I-Application
or	O
Rock	B-Application
Band	I-Application
controllers	O
automatically	O
.	O
</s>
<s>
Songs	O
need	O
to	O
be	O
in	O
Frets	B-Application
on	I-Application
Fire	I-Application
format	O
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
Dance	B-Application
Dance	I-Application
Revolution	I-Application
or	O
StepMania	B-Language
:	O
the	O
dancer	O
will	O
have	O
to	O
match	O
the	O
steps	O
displayed	O
on	O
screen	O
on	O
a	O
dancing	O
mat	O
as	O
precisely	O
as	O
possible	O
.	O
</s>
<s>
Songs	O
need	O
to	O
be	O
in	O
StepMania	B-Language
format	O
.	O
</s>
<s>
On	O
2014-11-01	O
,	O
Performous	O
released	O
its	O
1.0	O
version	O
containing	O
a	O
new	O
engine	O
based	O
on	O
SDL2	O
,	O
the	O
ability	O
to	O
create	O
playlists	O
,	O
and	O
a	O
lot	O
of	O
bug	B-Error_Name
fixes	O
.	O
</s>
<s>
On	O
2016-01-23	O
,	O
Performous	O
released	O
its	O
1.1	O
version	O
containing	O
mostly	O
bug	B-Error_Name
fixes	O
.	O
</s>
