We recommend you do so according to their characteristics. The old NES, SNES, ATARI, or Nintendo 64 cartridge video games are very resistant. You can keep them in their original case and store them in a box or a shelf that you have at your disposal. If you don't have the original game case, you can use bubble wrap to protect it from any damage. Else, you can store your video game collection on shelves. To reduce space, you can keep only the video game cartridges on the shelves. You can store the original cases of the cartridges in boxes or plastic bags. For CDs, each CD must be packed individually. This is to avoid any contact that could scratch it. It is advisable to clean them with alcohol to prevent any harmful residue.