This has come up before. I did some research, and I couldn't find any evidence that Games Unplugged 29 was ever actually printed or shipped. For example, Noble Knight doesn't even have an entry for any issues past 28, and they have a webpage for everything. I can't find a photo of the cover, I can't find a listing on old order forms, I can't find anything.
I strongly suspect that if any copies were printed, they were in very limited numbers and possibly seized (and if so, likely destroyed) by whatever agency arrested and convicted the owner of the magazine for wire fraud.
That said, a contract is a contract. If whoever wrote the story signed away republication rights - and was paid - that's that, it can't be reprinted.