Spelling Star (A Learning Game for Kindle) ($2.99), by puzzle.tv, is a new Kindle Active Content game. No internet connection is required to play the game, but it is restricted to US customers.
Book Description
How good is your word knowledge? Find out by taking the Spelling Star challenge and progress through 100 increasingly difficult levels to see how good you really are.
Spelling Star offers more than just spelling exercises -- featuring ten different game types including straight spelling, anagrams, misspellings, as well as noun, adjective, and verb tests. With thousands of words ranging in difficulty from 'able' to 'zygodactylism', Spelling Star is suitable for all ages and abilities. Four user profiles let you save your progress and compare high scores with friends and family who may also wish to play.
Spelling Star adapts quickly to the proficiency of the user. The level at which you start is initially based on your age, and adjusts up or down according to your performance in the Main Challenge portion of the game. In addition to the Main Challenge, you can practice at your current level by selecting one of the Quick Games. As you progress through levels, you will unlock new Quick Games to play.