Tell us which iBook clamshell you have and what version of OS X it's running? Do you have the original disk that came with the iBook? You mentioned game, what game?
FYI...your iBook isn't running "iOS" 10.3...it's Mac OS 10.3. The "iOS's" weren't even around back in 2003 when OS 10.3 was released.
As far as your original question. You didn't give us nearly enough detail on what you are trying to do...or the computers specifications...to provide any sort of helpful answer.
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