<s>
Mari0	B-Application
(	O
pronounced	O
"	O
mari-zero	O
"	O
or	O
"	O
mari-oh	O
"	O
)	O
is	O
a	O
2012	O
side-scrolling	O
platform	O
video	O
game	O
developed	O
by	O
German	O
indie	O
developer	B-Operating_System
Maurice	O
Guégan	O
with	O
creative	O
input	O
from	O
Sašo	O
Smolej	O
and	O
released	O
onto	O
their	O
website	O
Stabyourself.net	O
.	O
</s>
<s>
It	O
combines	O
gameplay	O
elements	O
from	O
Nintendo	O
's	O
Super	B-Application
Mario	I-Application
series	O
and	O
Valve	O
's	O
Portal	B-Application
series	O
.	O
</s>
<s>
The	O
game	O
features	O
Mario	B-Application
armed	O
with	O
a	O
"	O
portal	B-Application
gun	O
"	O
,	O
the	O
main	O
game	O
mechanic	O
in	O
the	O
Portal	B-Application
series	O
,	O
allowing	O
him	O
to	O
create	O
two	O
inter-spatial	O
portals	B-Application
on	O
2-dimensional	O
surfaces	O
which	O
can	O
transport	O
himself	O
,	O
enemies	O
and	O
other	O
objects	O
through	O
them	O
.	O
</s>
<s>
Development	O
began	O
in	O
2011	O
as	O
a	O
direct	O
port	O
of	O
the	O
original	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
with	O
no	O
clear	O
gimmick	O
in	O
mind	O
.	O
</s>
<s>
The	O
pair	O
's	O
first	O
idea	O
was	O
to	O
implement	O
a	O
four-player	O
multiplayer	O
system	O
similar	O
to	O
the	O
one	O
seen	O
in	O
New	B-Application
Super	I-Application
Mario	I-Application
Bros	I-Application
.	I-Application
Wii	I-Application
–	O
however	O
,	O
after	O
they	O
viewed	O
a	O
Dorkly	O
video	O
entitled	O
Mario	B-Application
With	O
A	O
Portal	B-Application
Gun	O
,	O
they	O
settled	O
on	O
the	O
idea	O
of	O
including	O
a	O
portal	B-Application
gun	O
and	O
other	O
elements	O
from	O
the	O
Portal	B-Application
series	O
.	O
</s>
<s>
An	O
update	O
to	O
the	O
game	O
titled	O
Mari0	B-Application
:	O
Special	O
Edition	O
was	O
planned	O
for	O
release	O
at	O
an	O
unknown	O
date	O
,	O
however	O
it	O
was	O
cancelled	O
in	O
2015	O
following	O
technical	O
constraints	O
.	O
</s>
<s>
The	O
core	O
game	O
of	O
Mari0	B-Application
plays	O
directly	O
from	O
the	O
8-bit	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
2D	O
platform	O
game	O
,	O
where	O
the	O
player	O
controls	O
Mario	B-Application
via	O
the	O
keyboard	O
,	O
running	O
and	O
jumping	O
through	O
levels	O
,	O
avoiding	O
or	O
jumping	O
on	O
enemies	O
to	O
defeat	O
them	O
,	O
while	O
collecting	O
coins	O
to	O
earn	O
points	O
towards	O
their	O
score	O
.	O
</s>
<s>
The	O
game	O
adds	O
the	O
concept	O
of	O
the	O
"	O
portal	B-Application
gun	O
"	O
from	O
the	O
Portal	B-Application
series	O
;	O
the	O
player	O
can	O
click	O
with	O
the	O
mouse	O
device	O
on	O
two	O
separate	O
surfaces	O
on	O
the	O
level	O
to	O
create	O
a	O
portal	B-Application
between	O
them	O
.	O
</s>
<s>
This	O
can	O
be	O
used	O
for	O
a	O
number	O
of	O
gameplay	O
options	O
,	O
often	O
using	O
vertical	O
momentum	O
entering	O
one	O
portal	B-Application
to	O
"	O
fling	O
"	O
the	O
Mario	B-Application
character	O
horizontally	O
out	O
of	O
the	O
other	O
portal	B-Application
,	O
but	O
will	O
also	O
affect	O
enemies	O
and	O
other	O
game	O
elements	O
in	O
similar	O
manners	O
.	O
</s>
<s>
The	O
core	O
game	O
uses	O
the	O
level	O
designs	O
from	O
the	O
original	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
as	O
well	O
as	O
sets	O
of	O
test	O
chambers	O
inspired	O
by	O
Portals	B-Application
Aperture	O
Science	O
.	O
</s>
<s>
Mari0	B-Application
began	O
as	O
a	O
recreation	O
of	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
created	O
by	O
Maurice	O
Guégan	O
in	O
the	O
LÖVE	O
framework	O
.	O
</s>
<s>
Their	O
initial	O
idea	O
was	O
to	O
incorporate	O
the	O
multiplayer	O
gameplay	O
of	O
New	B-Application
Super	I-Application
Mario	I-Application
Bros	I-Application
.	I-Application
Wii	I-Application
.	O
</s>
<s>
However	O
,	O
after	O
seeing	O
a	O
video	O
on	O
the	O
humor	O
site	O
Dorkly	O
entitled	O
Mario	B-Application
With	O
A	O
Portal	B-Application
Gun	O
,	O
the	O
pair	O
decided	O
that	O
they	O
would	O
add	O
a	O
portal	B-Application
gun	O
as	O
well	O
.	O
</s>
<s>
He	O
received	O
creative	O
input	O
from	O
Smolej	O
,	O
the	O
developer	B-Operating_System
and	O
spokesperson	O
of	O
the	O
Stabyourself.net	O
website	O
.	O
</s>
<s>
The	O
pair	O
frequently	O
created	O
blog	O
posts	O
keeping	O
followers	O
up	O
to	O
date	O
with	O
the	O
latest	O
Mari0	B-Application
developments	O
,	O
including	O
a	O
month-long	O
screenshot	O
marathon	O
of	O
Mari0	B-Application
updates	O
.	O
</s>
<s>
The	O
code	O
was	O
also	O
uploaded	O
to	O
a	O
public	O
GitHub	B-Application
repository	O
to	O
allow	O
contributions	O
from	O
the	O
community	O
.	O
</s>
<s>
On	O
May	O
1	O
,	O
2012	O
,	O
an	O
update	O
to	O
the	O
game	O
titled	O
Mari0	B-Application
:	O
Special	O
Edition	O
was	O
announced	O
.	O
</s>
<s>
It	O
was	O
planned	O
to	O
feature	O
the	O
originally	O
delayed	O
online	O
multiplayer	O
along	O
with	O
several	O
other	O
features	O
for	O
use	O
in	O
custom	O
levels	O
such	O
as	O
vertical	O
maps	O
,	O
custom	O
characters	O
,	O
and	O
more	O
elements	O
from	O
Portal	B-Application
2	I-Application
.	O
</s>
<s>
On	O
September	O
27	O
,	O
2017	O
,	O
Guégan	O
began	O
to	O
rewrite	O
Mari0	B-Application
as	O
Nintendo	B-Operating_System
3DS	I-Operating_System
homebrew	B-Application
.	O
</s>
<s>
As	O
the	O
device	O
utilizes	O
a	O
mobile	B-General_Concept
processor	I-General_Concept
,	O
extra	O
care	O
had	O
to	O
be	O
put	O
in	O
to	O
ensuring	O
the	O
game	O
was	O
highly	O
performant	O
.	O
</s>
<s>
On	O
January	O
1	O
,	O
2018	O
,	O
he	O
dropped	O
support	O
for	O
the	O
3DS	B-Operating_System
due	O
to	O
the	O
homebrew	B-Application
platform	O
's	O
immaturity	O
and	O
shifted	O
his	O
focus	O
towards	O
recreating	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
3	I-Application
with	O
portals	B-Application
for	O
PC	O
platforms	O
.	O
</s>
<s>
It	O
was	O
at	O
this	O
time	O
that	O
the	O
project	O
assumed	O
the	O
name	O
Mari0	B-Application
2	O
,	O
sometimes	O
known	O
internally	O
and	O
within	O
the	O
community	O
as	O
Mari3	O
.	O
</s>
<s>
The	O
game	O
features	O
what	O
the	O
team	O
described	O
as	O
a	O
"	O
massive	O
upgrade	O
to	O
the	O
portal	B-Application
system	O
"	O
which	O
allows	O
portals	B-Application
to	O
be	O
used	O
with	O
the	O
newly	O
added	O
sloped	O
surfaces	O
and	O
overhauls	O
their	O
visual	O
design	O
.	O
</s>
<s>
On	O
January	O
4	O
,	O
2022	O
,	O
the	O
game	O
was	O
uploaded	O
to	O
a	O
public	O
GitHub	B-Application
repository	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
Mari0	B-Application
has	O
been	O
covered	O
on	O
various	O
technology	O
and	O
video	O
game	O
websites	O
.	O
</s>
<s>
It	O
has	O
gained	O
a	O
lot	O
of	O
attention	O
on	O
sites	O
such	O
as	O
YouTube	B-General_Concept
and	O
Reddit	B-Application
.	O
</s>
