Long storage life curiosity - lemm.ee

Hey guys, I just had a curiosity on the multiple ways of storaging stuff and how long would that hold, take backing it up to a newer storage after some years out of the table. So how did this come in my mind, I was just reminiscing about how I used to play games with inserting a CD or Cartridge onto the device and how I miss that flavour. I would like to do it again, I already like having my games dependancy free (praise mr goldmountain), and I am saving up some money to spend on hoarding possibilities. I would like to know what would have the longest storage life, would burning games into bluray discs be too unhinged or is something I am missing? Thanks in advance in helping me out witht his brainstorm.