Here's how much PriceCharting says some of these classic Nintendo 64 games are now worth... Super Mario 64.
For instance, the sealed Nintendo 64 Ice Blue console is estimated to be worth a healthy £1,578 – or £119 opened up.
If you have the Clear Blue Nintendo 64, that could be worth £734 new or £272 in an open box.
Chances are that you've probably opened your Nintendo 64, but don't panic: an unsealed unit is still worth a fair bit of cash.
The Jungle Green Nintendo 64 could net you £1,386 sealed, or £513 in an open box.