<s>
Ostron	B-Application
,	O
also	O
released	O
as	O
Joust	B-Application
,	O
is	O
a	O
ZX	B-Operating_System
Spectrum	I-Operating_System
video	O
game	O
developed	O
and	O
released	O
by	O
Softek	O
in	O
1983	B-Application
.	O
</s>
<s>
It	O
is	O
a	O
clone	O
of	O
the	O
1982	O
arcade	B-Application
video	I-Application
game	I-Application
,	O
Joust	B-Application
.	O
</s>
<s>
Crash	O
awarded	O
Ostron	B-Application
a	O
72%	O
rating	O
,	O
deeming	O
it	O
"	O
a	O
very	O
enjoyable	O
game	O
,	O
with	O
good	O
graphics	O
and	O
sound	O
"	O
.	O
</s>
