We've seen charming and freaky in Google's games, but the search giant has a nobler aim with its latest experiment: improving your English skills. Spell Up is a mishmash of a spelling bee, Wheel of Fortune and Jumble, with voice recognition thrown in for good measure. You can launch it in any Chrome browser on a desktop, Android or iOS device, though you can only use a keyboard on an iPhone or iPad. Once you're in, you'll be able select a difficulty level and build a tower of words, until a wrong move crashes the whole thing down. It worked great for me on Android, but using it on my desktop was a F-A-I-L for some reason, as letters like 'G' and 'S" couldn't be recognized. Perhaps you'll have better luck, though -- you can try it here.