The Word Challenge is a game where player needs to find the word among a lot of letters. You have 3 levels, easy, medium and hard. Think for each level of the word and your user will have to find that word.
want to find niche for your app? Try making app for your social group/language. If you know several languages,
use less popular one. Targeting small groups of people cam make your app a lot more popular. You'll be able to
find niches that are free from huge players on app market and make a great app for your social group.