Ozge Karagolu's wonderful blog. This is a great voice activated game that uses the device's microphone as people try to spell out words. Every time a word gets spelled correctly it gets stacked on top of each other (think UpWords). As you get more words correct the game gets harder and harder and more features such as bonuses gets unlocked. If a word gets misspelled the tower comes crashing down. Also, this is a nice game for ESL students as a person can hear the word, the pronunciation, and definitions in different languages as they try to spell the word.
I highly recommend checking out Google's Spell Up by clicking here!!!