What shape are the games that are similar to My Little Flufties?
My Little Flufties: My Little Flufties is a 3D life simulator similar to Tamagotchi published on Nintendo DS and Windows by Lexicon Entertainment. Tamagotchi:  Most Tamagotchi are housed in a small egg-shaped computer with an interface usually consisting of three buttons, although the number of buttons may vary.
egg-shaped