<s>
Superior	B-Device
Software	I-Device
Ltd	O
(	O
also	O
known	O
as	O
Superior	B-Device
Interactive	I-Device
)	O
is	O
a	O
video	O
game	O
publisher	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
the	O
main	O
publishers	O
for	O
the	O
BBC	B-Device
Micro	I-Device
and	O
Acorn	B-Device
Electron	I-Device
computers	O
in	O
the	O
1980s	O
and	O
early	O
1990s	O
.	O
</s>
<s>
It	O
currently	O
releases	O
games	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
iOS	B-Application
and	O
Android	B-Application
;	O
mostly	O
updates	O
of	O
its	O
original	O
games	O
.	O
</s>
<s>
Superior	B-Device
Software	I-Device
was	O
established	O
in	O
1982	O
by	O
Richard	O
Hanson	O
and	O
John	O
Dyson	O
,	O
two	O
graduates	O
of	O
the	O
University	O
of	O
Leeds	O
,	O
England	O
.	O
</s>
<s>
They	O
had	O
previously	O
programmed	O
software	O
published	O
by	O
Micro	O
Power	O
,	O
and	O
they	O
wrote	O
Superior	O
's	O
first	O
four-game	O
releases	O
for	O
the	O
BBC	B-Device
Micro	I-Device
:	O
three	O
were	O
written	O
by	O
Hanson	O
and	O
one	O
by	O
Dyson	O
.	O
</s>
<s>
Major	O
software	O
developers	O
Peter	O
Johnson	O
,	O
Tim	O
Tyler	O
,	O
Martin	O
Edmondson	O
,	O
Nicholas	O
Chamberlain	O
,	O
Kevin	O
Edwards	O
,	O
David	O
Hoskins	O
,	O
Matthew	O
Atkinson	O
,	O
Chris	O
Roberts	O
,	O
Tony	O
Oakden	O
,	O
Peter	O
Scott	O
,	O
Gary	O
Partis	O
,	O
Peter	O
Irvin	O
,	O
Jeremy	O
Smith	O
,	O
David	O
Braben	O
,	O
Ian	O
Bell	O
,	O
Geoff	O
Crammond	O
,	O
Jonathan	O
Griffiths	O
and	O
Nick	O
Pelling	O
have	O
all	O
produced	O
software	O
published	O
by	O
Superior	O
,	O
sometimes	O
released	O
under	O
the	O
joint	O
Superior	B-Device
Software	I-Device
/	O
Acornsoft	O
brandname	O
.	O
</s>
<s>
Their	O
best-known	O
games	O
are	O
the	B-Application
Repton	I-Application
series	I-Application
of	O
games	O
,	O
which	O
have	O
sold	O
over	O
125,000	O
units	O
in	O
total	O
.	O
</s>
<s>
Other	O
notable	O
Superior	B-Device
Software	I-Device
games	O
for	O
the	O
BBC	B-Device
Micro	I-Device
and	O
Acorn	B-Device
Electron	I-Device
include	O
Overdrive	O
,	O
Citadel	B-Application
,	O
Thrust	B-Application
,	O
Galaforce	O
,	O
Stryker	B-Application
's	I-Application
Run	I-Application
,	O
Ravenskull	B-Application
,	O
Codename	O
:	O
Droid	O
(	O
sequel	O
to	O
Stryker	B-Application
's	I-Application
Run	I-Application
)	O
,	O
Palace	B-Application
of	I-Application
Magic	I-Application
,	O
Bonecruncher	B-Application
,	O
Quest	O
,	O
Pipeline	B-Device
,	O
Exile	B-Application
and	O
Ricochet	B-Application
.	O
</s>
<s>
They	O
also	O
published	O
the	O
seminal	O
Zarch	B-Application
for	O
the	O
Acorn	B-Device
Archimedes	I-Device
,	O
as	O
well	O
as	O
follow-up	O
games	O
using	O
the	O
same	O
engine	O
,	O
Conqueror	B-Application
and	O
Air	O
Supremacy	O
.	O
</s>
<s>
As	O
well	O
as	O
their	O
high	O
quality	O
original	O
games	O
,	O
Superior	O
released	O
a	O
number	O
of	O
official	O
Acorn	O
conversions	O
of	O
big	O
games	O
from	O
other	O
systems	O
including	O
Barbarian	B-Application
,	O
The	B-Application
Last	I-Application
Ninja	I-Application
,	O
Predator	B-Application
,	O
Hostages	B-Device
and	O
Sim	O
City	O
.	O
</s>
<s>
Superior	O
also	O
published	O
a	O
number	O
of	O
educational	O
and	O
utility	O
software	O
titles	O
including	O
the	O
speech	B-Application
synthesis	I-Application
program	O
Speech	O
!	O
.	O
</s>
<s>
1	O
individually	O
(	O
Citadel	B-Application
,	O
Thrust	B-Application
,	O
Ravenskull	B-Application
,	O
and	O
Stryker	B-Application
's	I-Application
Run	I-Application
)	O
,	O
while	O
subsequent	O
compilations	O
increasingly	O
featured	O
games	O
licensed	O
from	O
other	O
software	O
houses	O
such	O
as	O
Micro	O
Power	O
or	O
Alligata	O
.	O
</s>
<s>
The	O
series	O
eventually	O
ran	O
to	O
18	O
issues	O
for	O
the	O
BBC	B-Device
Micro	I-Device
,	O
although	O
the	O
latest	O
ones	O
were	O
released	O
on	O
disc	O
only	O
,	O
well	O
into	O
the	O
demise	O
of	O
the	O
8-bit	O
scene	O
with	O
lower	O
sales	O
as	O
a	O
result	O
.	O
</s>
<s>
Superior	O
,	O
under	O
the	O
brandname	O
Superior	B-Device
Interactive	I-Device
,	O
now	O
mainly	O
develops	O
and	O
publishes	O
software	O
for	O
computers	O
and	O
devices	O
running	O
Microsoft	B-Application
Windows	I-Application
,	O
iOS	B-Application
and	O
Android	B-Application
;	O
and	O
they	O
have	O
released	O
several	O
updated	O
versions	O
of	O
some	O
of	O
their	O
popular	O
1980s	O
hits	O
for	O
these	O
systems	O
.	O
</s>
<s>
This	O
includes	O
the	O
original	O
three	O
Repton	B-Application
games	O
,	O
additional	O
Repton	B-Application
levels	O
,	O
Galaforce	O
Worlds	O
,	O
Ravenskull	B-Application
,	O
Pipeline	B-Device
Plus	O
and	O
Ricochet	B-Application
.	O
</s>
