From Wikipedia:
Spore Creatures is a spin-off of Spore, developed by Griptonite Games and published by Electronic Arts, in which a player controls and evolves a creature of their creation. It is a science fiction adventure game.
There are two separate, but unrelated games titled Spore Creatures. The first was released in 2008 for the Nintendo DS and is not a sequel to any game, while the second was released in 2009 for iOS devices as a sequel to Spore Origins, and has similar gameplay to it.