<s>
Snail	B-Application
Maze	I-Application
is	O
a	O
1986	O
video	O
game	O
by	O
Sega	O
for	O
the	O
Master	O
System	O
.	O
</s>
<s>
Instead	O
of	O
being	O
released	O
on	O
a	O
cartridge	O
,	O
it	O
was	O
built	O
into	O
the	O
system	O
's	O
BIOS	B-Operating_System
and	O
could	O
be	O
played	O
by	O
starting	O
the	O
system	O
without	O
a	O
game	O
cartridge	O
inserted	O
and	O
holding	O
Up	O
and	O
buttons	O
1	O
and	O
2	O
simultaneously	O
.	O
</s>
<s>
Some	O
later	O
console	O
models	O
included	O
a	O
minimal	O
BIOS	B-Operating_System
because	O
of	O
memory	O
constraints	O
,	O
and	O
Snail	B-Application
Maze	I-Application
had	O
to	O
be	O
removed	O
.	O
</s>
<s>
These	O
systems	O
instead	O
included	O
a	O
built-in	O
Alex	B-Application
Kidd	I-Application
in	I-Application
Miracle	I-Application
World	I-Application
or	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
.	O
</s>
<s>
Snail	B-Application
Maze	I-Application
was	O
never	O
released	O
in	O
cartridge	O
or	O
card	O
format	O
.	O
</s>
<s>
A	O
very	O
simple	O
game	O
,	O
Snail	B-Application
Maze	I-Application
involves	O
navigating	O
a	O
small	O
orange	O
snail	O
with	O
a	O
yellow	O
shell	O
through	O
a	O
blue	O
maze	B-Application
.	O
</s>
<s>
Despite	O
its	O
relative	O
simplicity	O
compared	O
to	O
other	B-Application
games	I-Application
of	I-Application
its	I-Application
era	I-Application
,	O
Snail	B-Application
Maze	I-Application
could	O
be	O
quite	O
challenging	O
.	O
</s>
<s>
In	O
2004	O
an	O
unofficial	O
port	O
of	O
Snail	B-Application
Maze	I-Application
was	O
made	O
for	O
the	O
Japanese	O
MSX	B-Operating_System
computer	O
platform	O
with	O
enhanced	O
graphics	O
and	O
a	O
new	O
title	O
screen	O
.	O
</s>
<s>
A	O
version	O
of	O
Snail	B-Application
Maze	I-Application
was	O
included	O
on	O
the	O
Coleco	B-Device
Sonic	I-Device
handheld	O
system	O
,	O
created	O
in	O
2006	O
.	O
</s>
<s>
An	O
unofficial	O
port	O
of	O
Snail	B-Application
Maze	I-Application
was	O
released	O
in	O
December	O
2015	O
for	O
the	O
TI-84	O
Plus	O
CE	O
graphing	O
calculator	O
,	O
written	O
in	O
eZ80	B-Device
assembly	O
language	O
.	O
</s>
<s>
An	O
emulated	O
version	O
of	O
Snail	B-Application
Maze	I-Application
can	O
be	O
played	O
on	O
the	O
in-game	O
Master	O
System	O
in	O
the	O
2021	O
game	O
Lost	B-Application
Judgment	I-Application
by	O
using	O
the	O
system	O
without	O
selecting	O
a	O
game	O
.	O
</s>
