The game presents you with a definition, and you have to assemble the intended word with that definition from a grid of letters. Each game is a round of eight randomly-selected words. All words are three to seven letters long. The game starts with a vocabulary of over 160 words of varying difficulties. You can increase that vocabulary to over 20,000 English words by purchasing word packs with words from different domains and difficulties. Settings allow you to customize the game difficulty from easy through challenging so you can play at the level you prefer. Settings also allow you to change the word focus across word packs so you can change your focus to a particular domain or difficulty if desired. You can collect "charms" that will help you with more challenging words. And there are over 30 achievements to add additional challenges.