Verify your sources, keep your antivirus active, and enjoy your trip down memory lane!
Not all compression is created equal. If you are searching for highly compressed files, you need to know which formats work best for which consoles.
I do not own or operate Saferoms. Downloading copyrighted ROMs may violate laws in your region. This post is for educational purposes regarding file compression technology. Always dump your own BIOS and games from hardware you own if possible.
: For modern emulation, advanced formats like CHD (for CD-based games), RVZ (for GameCube/Wii), and GZIP (for mobile emulators like AetherSX2) allow for space savings without sacrificing performance. How to Use Highly Compressed Files Safely
A specialized format for the Dolphin Emulator (GameCube/Wii) that can achieve up to 90% compression by removing "garbage" data used to fill physical discs.