A fantasy video game console (or simply fantasy console) is an emulator for a fictitious video game console. It aims to create the experience of retro gaming without the need to emulate a real console, allowing the developer to freely decide what specifications their fictional hardware will have.
An example is the Gigadrive, an imaginary revision of the Sega Genesis designed by M2, who also developed an emulator of this system. This console was given double VRAM, four more background layers (and Z-values in each layer), and sprites to achieve 3D effects in patched Genesis games. These emulated games were sold in Nintendo 3DS under the label Sega 3D Classics Collection.