<s>
Mr.	B-Application
Mephisto	I-Application
is	O
a	O
video	O
game	O
written	O
for	O
the	O
Commodore	O
64	O
by	O
Dave	O
Lucas	O
and	O
published	O
by	O
Euro-Byte	O
in	O
1984	O
.	O
</s>
<s>
A	O
port	O
to	O
the	O
BBC	B-Device
Micro	I-Device
followed	O
in	O
1986	O
.	O
</s>
<s>
Following	O
success	O
in	O
the	O
C64	O
market	O
,	O
Euro-Byte	O
commissioned	O
a	O
port	O
of	O
the	O
game	O
to	O
the	O
BBC	B-Device
Micro	I-Device
.	O
</s>
<s>
However	O
,	O
no	O
source	O
code	O
was	O
available	O
as	O
the	O
game	O
had	O
been	O
coded	O
in	O
6502	B-General_Concept
assembler	O
directly	O
into	O
the	O
C64	O
's	O
monitor	O
program	O
.	O
</s>
<s>
Euro-Byte	O
subsequently	O
commissioned	O
a	O
version	O
for	O
the	O
Acorn	B-Device
Electron	I-Device
,	O
but	O
this	O
was	O
never	O
released	O
.	O
</s>
