When I was a little kid I was in this exact situation but for different reasons. The lady who babysat me and my siblings had a PS1 that had no memory card in it. She couldn't be bothered to buy a memory card because old. The PlayStation had one game and that game was crash bandicoot. If memory serves there might have been some kind of level codes that you could put in, but we never did for whatever reason. (The stipulation might have been that you get level codes after you complete an island, but it took us months to complete the first island). We just started the game over from scratch every time we turned it on which was every day after school and played the first level, second level, and so forth maybe getting up to the second island which is after the first boss. It really sucked the fun out of the game, and commiserating over it made that old lady super mad because she didn't understand why we weren't having fun or what saving was. The old game super Mario Bros 3 actually doesn't have any kind of saving feature and it's a game with about eight worlds. I remember as a little kid getting super good at the first three worlds, finding all the secrets, finding a bunch of warp whistles and stuff, and getting good enough to get to about the sixth world. What's nuts is I didn't realize but, the designers of the game made it to where that would be how it was played. These "Easter eggs" we're intentionally put in the game to get you through it because you weren't expected to finish it at one go.