Wibbell++ is a game system: a deck of cards, each with a pair of letters.
In the box are five rulesets: Wibbell (the fastest word game in the west, 10-30 minutes, 3-7 players); Phrasell (the party game of inventing little phrases, 20-30 minutes, 4-10 players); Grabell (a speed pattern recognition/dexterity game, 2-3 minutes, 2-7 players); Alphabeticell (assembling an alphabetical sequence, 3-7 minutes, 3-7 players); and Faybell (a co-operative storytelling activity, 15-30 minutes, 2-5 players).
Wibbell (the 'flagship' game) is a speed-based word game that involves shouting out words that contain particular letters. As you collect more cards, the game becomes more difficult until the end of the round. Round handicaps give the game some more strategy and gives everyone else a chance to catch up.