Luigi Bros. is a hypothetical or fan-made game. There is no officially released game with this exact title for the NES. It's likely a reference to Luigi, Mario's brother, who features prominently in several Nintendo games. The name suggests platforming or action gameplay similar to the Mario series, possibly focusing on Luigi's unique abilities or characteristics. Any gameplay details would be purely speculative unless more information about a specific ROM or development project is provided.

Luigi Bros.

Low G Man - The Low Gravity Man (Europe)