Why 90s Consoles Used Memory Cards
Saving progress in a 90s game wasn't a solved problem the way it is today; the method varied by console and sometimes by individual game, and the ability to save at all was a real selling point for some hardware.
Passwords and cartridge saves
Many NES and early cartridge games used a password or code system instead of true saving, giving the player a string of letters or symbols to write down and re-enter later. Other cartridges, including several well-known NES and SNES games, built in a small battery-backed memory chip that saved progress directly on the cartridge itself, at the cost of the save being lost entirely if that battery eventually died.
External memory cards
Disc-based consoles couldn't write to a CD, so they needed separate, dedicated storage. Sony's PlayStation memory card, released alongside the console in 1994, held 128 KB divided into 15 usable blocks of 8 KB each, and a higher-capacity 1 MB card followed in 1997. The Sega Saturn used a smaller amount of built-in internal storage but supported an external backup memory cartridge offering considerably more space, according to period documentation. The Nintendo 64 stuck with cartridges for games but still needed external storage for saves on many titles, solved with the Controller Pak, a 256 KB memory unit that plugged into the back of the controller itself rather than the console.
Capacity and compatibility
None of these formats were interchangeable across brands, and capacity varied enormously: a PS1 memory card's 15 blocks might hold only a handful of game saves depending on how much space each one used, which made managing storage a real, everyday consideration for anyone with a large game library.
Managing old saves today
If you still own original hardware and cards from this era, battery-backed cartridge saves and aging memory cards can both fail unpredictably with age. We don't have a hands-on data-recovery guide to offer here; our beginner setup guide covers the broader hardware side of getting an original system running today.
Frequently asked questions
Why did some old games use passwords instead of saving?
Many NES and early cartridge games couldn't write new data to the cartridge at all, so a password or code system let a player return to roughly the same point without needing writable storage.
How much could a PlayStation memory card actually store?
The original 1994 PS1 memory card held 128 KB, divided into 15 usable 8 KB blocks, before a higher-capacity 1 MB card followed in 1997.
Did the Nintendo 64 have its own memory card?
Yes, called the Controller Pak, a 256 KB memory unit that plugged into the back of the controller rather than the console itself.
Sourcing and corrections
PS1 memory card capacity, Saturn backup memory options, and the N64 Controller Pak's 256 KB capacity were checked via web search against sources including the Museum of Obsolete Media and N64Brew in September 2026. Product recommendations for current storage solutions are deferred to our beginner setup guide rather than repeated here, per this article's own scope boundary.