Sonic the Hedgehog is an LCD game created by Tiger Electronics. This game is unique among Sonic LCD games as it comes in a form similar to that of a wristwatch. There is a total of 4 levels.
Super Mario World (also known as Super Mario World Game Watch and Super Mario Bros. 4) is a licensed wristwatch videogame made by Nelsonic Industries, based on the Super NES game Super Mario World.
The Talking Ghostbusters II/Ghostbusters II is a handheld game (referred in boxed releases as a Electronic LCD Game) that was was released by Micro Games of America (also going by Micro Games USA briefly) in 1990. The game has variant releases, though it appears that the actual game and device layout don't change in any variants.