<s>
I	B-Application
,	I-Application
Ball	I-Application
is	O
a	O
vertically	O
scrolling	O
shooter	O
published	O
for	O
the	O
Amstrad	B-Device
CPC	I-Device
,	O
Commodore	O
64	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
in	O
1987	O
by	O
Firebird	O
.	O
</s>
<s>
It	O
was	O
followed	O
by	O
a	O
sequel	O
,	O
I	B-Application
,	I-Application
Ball	I-Application
2	O
,	O
released	O
later	O
the	O
same	O
year	O
.	O
</s>
