He began collecting five years ago after seeing a photograph of a huge games collection on website TheChive.com. Soon after, he bought a game from his childhood, Wonder Boy, at a flea market at the Coburg Drive-in.

"Family is much more important and it is time," he said.

His fiancee finds his collection "interesting" and has not applied any pressure to sell it, he said. He will use the money – $4200 is the asking price on Gumtree – to help furnish his marital home.

"If I had time I would play them, I would, but I don't – I like to go fishing."

"I built it from scratch. I used to play the games as a kid and I guess what really appeals to me is that it (the collection) is really massive," he said.

"When I get something in my head, I just do it."

For the eager gamer, the collection includes two audio-visual splitters that allow a gamer to hook up six consoles to one screen, so up to 12 consoles can be at beck and call of the new owner. Mr Gonullu has also crafted a cabinet to display the consoles, which is included in the price.

Mr Gonullu believes he has spent more than $6000 on the games and while there are larger collections around, they do not often come onto the market together. A collection of this size is enough to start an online business, he said.

"I have had a lot of people ask to split it up, but I won't do that," he said.