Crescer is no tamagotchi, but if you get you gaming kicks from keeping something alive rather thank killing others, this game may very well be for you.
Combining elements of the Sims and tower defence, your job is to keep your plant alive in different environments while struggling against challenges which range from the simple elements all the way to volcanoes. To help you do this you have an assortment of tools which of course have to be used wisely if your seed it so survive to blooming.
Success is rewarded by a rather more active arcade level, where your flower, presumably now all grown up, defends the Moon against an army of evil bug invaders.
Crescer features high quality graphics and unique game play, and can be found in Marketplace here for 99c (no trial).