<s>
SuperTux	B-Application
is	O
a	O
free	B-License
and	I-License
open-source	I-License
two-dimensional	O
platform	O
video	O
game	O
published	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
.	O
</s>
<s>
The	O
game	O
was	O
inspired	O
by	O
Nintendo	O
's	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
series	O
;	O
instead	O
of	O
Mario	B-Application
,	O
the	O
hero	O
in	O
the	O
game	O
is	O
Tux	B-Application
,	O
the	O
official	O
mascot	B-Application
of	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
The	O
game	O
was	O
originally	O
created	O
by	O
Bill	B-Language
Kendrick	I-Language
and	O
is	O
maintained	O
by	O
the	O
SuperTux	B-Application
Development	O
Team	O
.	O
</s>
<s>
It	O
is	O
written	O
mostly	O
in	O
the	O
C++	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
Many	O
of	O
the	O
in-game	O
graphics	O
were	O
created	O
by	O
Ingo	O
Ruhnke	O
,	O
author	O
of	O
Pingus	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
under	O
usage	O
of	O
Simple	B-Operating_System
DirectMedia	I-Operating_System
Layer	I-Operating_System
as	O
cross-platform	B-Operating_System
middlelayer	O
targeting	O
OpenGL	B-Application
and	O
OpenAL	B-Application
.	O
</s>
<s>
The	O
game	O
's	O
metadata	O
are	O
S-Expressions	B-Protocol
of	O
the	O
programming	O
language	O
Lisp	B-Language
,	O
scripts	B-Language
are	O
written	O
in	O
Squirrel	B-Language
.	O
</s>
<s>
Version	O
0.4.0	O
was	O
released	O
on	O
December	O
20	O
,	O
2015	O
,	O
which	O
features	O
significant	O
improvements	O
to	O
gameplay	O
,	O
all	O
new	O
graphics	O
,	O
a	O
switch	O
to	O
SDL2	B-Operating_System
,	O
and	O
new	O
features	O
.	O
</s>
<s>
On	O
January	O
13	O
,	O
2022	O
,	O
SuperTux	B-Application
was	O
released	O
on	O
Steam	B-Application
as	O
an	O
Early	O
Access	O
game	O
.	O
</s>
<s>
Gameplay	O
in	O
SuperTux	B-Application
is	O
similar	O
to	O
Super	O
Mario	O
Bros	O
..	O
Tux	B-Application
can	O
jump	O
under	O
bonus	O
blocks	O
marked	O
with	O
question	O
marks	O
to	O
gain	O
coins	O
or	O
retrieve	O
power-ups	O
such	O
as	O
the	O
egg	O
,	O
which	O
makes	O
Tux	B-Application
bigger	O
and	O
allows	O
him	O
to	O
take	O
an	O
extra	O
hit	O
before	O
dying	O
.	O
</s>
<s>
Tux	B-Application
can	O
defeat	O
some	O
bad	O
guys	O
by	O
jumping	O
on	O
them	O
,	O
and	O
most	O
can	O
be	O
defeated	O
or	O
frozen	O
by	O
shooting	O
bullets	O
after	O
collecting	O
a	O
fire	O
flower	O
or	O
an	O
ice	O
flower	O
.	O
</s>
<s>
Earth	O
flowers	O
grant	O
Tux	B-Application
a	O
miner	O
helmet	O
with	O
a	O
spotlight	O
for	O
dark	O
areas	O
and	O
can	O
give	O
invincibility	O
for	O
a	O
few	O
seconds	O
,	O
and	O
air	O
flowers	O
allow	O
Tux	B-Application
to	O
glide	O
in	O
the	O
air	O
,	O
jump	O
higher	O
and	O
move	O
faster	O
.	O
</s>
<s>
If	O
Tux	B-Application
gets	O
hit	O
after	O
he	O
collected	O
a	O
flower	O
,	O
he	O
loses	O
his	O
helmet	O
and	O
transforms	O
back	O
into	O
big	O
Tux	B-Application
.	O
</s>
<s>
There	O
are	O
additional	O
add-on	O
levels	O
in	O
SuperTux	B-Application
which	O
can	O
be	O
installed	O
with	O
the	O
built-in	O
add-on	O
manager	O
or	O
manually	O
.	O
</s>
<s>
New	O
add-ons	O
are	O
usually	O
published	O
on	O
the	O
forum	O
or	O
in	O
the	O
Discord	B-Application
server	O
and	O
can	O
be	O
added	O
to	O
the	O
list	O
after	O
testing	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
Tux	B-Application
begins	O
in	O
Icy	O
Island	O
.	O
</s>
<s>
Tux	B-Application
holds	O
a	O
picnic	O
with	O
Penny	O
,	O
his	O
girlfriend	O
.	O
</s>
<s>
Once	O
he	O
finds	O
that	O
Penny	O
is	O
missing	O
,	O
and	O
determined	O
to	O
save	O
her	O
,	O
Tux	B-Application
begins	O
his	O
journey	O
.	O
</s>
<s>
In	O
2007	O
Punto	O
Informatico	O
described	O
the	O
atmosphere	O
of	O
the	O
game	O
as	O
pleasant	O
and	O
praised	O
the	O
free	B-License
availability	I-License
of	O
the	O
game	O
.	O
</s>
<s>
In	O
2008	O
,	O
SuperTux	B-Application
was	O
used	O
as	O
a	O
game	O
for	O
children	O
by	O
school	O
district	O
#73	O
in	O
British	O
Columbia	O
,	O
which	O
had	O
decided	O
to	O
transition	O
to	O
free	B-License
and	I-License
open-source	I-License
software	I-License
.	O
</s>
<s>
Also	O
in	O
2008	O
,	O
SuperTux	B-Application
was	O
bundled	O
in	O
the	O
Linux	B-Operating_System
Caixa	O
Mágica	O
distribution	O
,	O
known	O
for	O
its	O
inclusion	O
in	O
the	O
Portuguese	O
Magalhães	O
computer	O
.	O
</s>
<s>
The	O
game	O
was	O
ported	O
to	O
other	O
platforms	O
,	O
including	O
GP2X	B-Device
,	O
Pocket	B-Device
PC	I-Device
,	O
PSP	B-Operating_System
,	O
and	O
Palm	B-Operating_System
WebOS	I-Operating_System
.	O
</s>
<s>
The	O
game	O
was	O
also	O
scheduled	O
to	O
be	O
included	O
in	O
the	O
release	O
of	O
the	O
EVO	B-Application
Smart	I-Application
Console	I-Application
as	O
of	O
April	O
2009	O
.	O
</s>
<s>
In	O
May	O
2017	O
download	O
portal	O
Softpedia	O
lists	O
for	O
the	O
Linux	B-Operating_System
version	O
alone	O
over	O
80,000	O
downloads	O
,	O
over	O
750,000	O
downloads	O
for	O
the	O
Windows	O
version	O
.	O
</s>
<s>
Between	O
2002	O
and	O
May	O
2017	O
SuperTux	B-Application
aggregated	O
also	O
over	O
850,000	O
downloads	O
via	O
SourceForge.net	B-Application
.	O
</s>
