If you have a complete MAME ROMset (e.g., MAME 0.270), you can rebuild it for FBNeo using a tool called ClrMAMEPro:

When you search for a "complete set," you will encounter three main formats:

| Type | Description | Pros | Cons | |------|-------------|------|------| | Split | Parent ROM contains shared files; clones only contain unique files. | Saves storage space. | Difficult for beginners; moving a clone without the parent breaks it. | | Merged | Parent and all clones are in a single ZIP file. | Easy to manage; everything for one game in one place. | Wastes space (duplicate data); slow to access. | | Non-Merged | Every game (parent and each clone) is a standalone ZIP containing all required files. | Perfect for frontends (LaunchBox, RetroArch); no dependency issues. | Largest file size (typically 60–80 GB for full FBNeo). |

For most users, the recommended format is the "non-merged" set. It is plug-and-play. Drop it into your roms/fbneo/ folder, and every game works independently.

Clones are smaller. They contain only the differences from the parent. For instance, sf2j.zip (Japan) might only include a different program ROM and a region-specific text file. If you delete the parent sf2.zip, the clone will fail to run.

If you're diving into arcade emulation, you’ve likely heard of FBNeo (FinalBurn Neo). It’s one of the best multi-arcade emulators available, supporting thousands of classic arcade games, plus some consoles and computers. But to use it properly, you need the right ROM set.

ROM sets often contain copyrighted software. In most jurisdictions, you should only download ROMs for games you physically own or that are abandonware with no commercial rights holder enforcing copyright. Check your local laws.

| Issue | Cause | Solution | |-------|-------|----------| | Missing neogeo.zip | BIOS file missing | Obtain v3.0 neogeo BIOS set. | | Wrong file CRC | Wrong ROM version | Use MAME rebuild (see 4.2). | | Clone requires parent | Split set | Either get parent or convert to non-merged. | | Samples not playing | Incorrect sample naming | Use fbneo_samples.dat + audit. |