Obviously you only collect items that are worth collecting - pristine, rare, desirable. Then the question is if the item will hold value. Rare physical videogames I think can go up in value longterm, because new generations of players will enjoy the games via emulation. They are also easy to vault, can be displayed as conversation pieces, and often have stories behind them that provide a historical background that helps when pitching it at auction. Overall while this is a relatively new asset class, I think it has staying power.

yes but with a installation base of 60 million, the chance that a game was made and became rare is rare.

And if you look at the documentary about the auction scam, you will see what the problem is: there are too many prestine nes cartridges available. Only if you don't know the market it makes sense to invest