From the announcement:
Wizkids is pleased to announce its upcoming Word game, Letter Go! Designed by Marcus Ross and Cara Ryan, three to six players write words that are 4-letters or more on their whiteboard using the available letter cards but score points only for the cards they are able to claim before their opponents!
Simply writing words down isn’t the only thing happening in this game. Every round, two Rule Cards are drawn, and they MUST be incorporated into your word! Will you have to write your word backwards? Maybe you’ll need to draw an eye whenever you write an “E”. You might even have to sign your name on your opponents’ whiteboard! Each letter of the alphabet has two rules associated with it, so there is countless combination of crazy antics!