ALF is a Sega Master System adventure game based on the TV series with the same name. It was only released in the US

ALF was one of the first Sega Master System games to be developed under supervision of Sega of America, being outsourced to Nexa (in the process of being absorbed into Spectrum Holobyte/Sphere; for all intents and purposes the company did not exist but is credited anyway) shortly after development had ended on Monopoly.

ALF received overwhelmingly negative reviews upon release and is often cited as being one of the worst Master System games in existence. Lead programmer Kevin Seghetti has admitted that the game was poor, being only 20 years old at the time with only Monopoly as development experience. While the source code is reportedly far better than that of Monopoly, virtually all sections of the game were rushed to meet deadlines. Seghetti has suggested that as he felt the ALF TV show was bad too, the game is at least in line with the source material.