SegaSonic the Hedgehog is a 1992 LCD game which was used as a promotional item in Japan. They were found in UFO catchers. Three versions were created which only vary by the color and by what is drawn on the case. There was also a handy keychain attached to the case.
Dr. Mario is one of the two LCD game watches belonging to the Gamewatch Boy line released in 1992 by Mani Industries. It plays similarly to the original game.