jg-geolith (Neo Geo emulation core for Jolly Good Emulation) jg-geolith is a highly accurate emulator for the Neo Geo AES and MVS. This emulator supports TerraOnion's NEO file format only. Filenames supported: .neo To run files with other extensions: jollygood -c geolith By default, no controls are mapped. The first time you run a game, press Shift-1 to configure the first controller. BIOS files from a recent MAME set are required: - aes.zip for Neo Geo AES (Home Console) - neogeo.zip for Neo Geo MVS (Arcade) and Unibios Copy these files to: ~/.local/share/jollygood/bios/