Lex ($1) is a new word game from Simple Machine. Players are tasked with building words as fast as they can. Though there’s no board, the game should feel familiar to Scrabble players. Players in Lex make words from a “rack” of nine letters. When letters are used in a word, they disappear, and new letters arrive. However, to up the drama, the letter tiles start to turn red as they hang around — the tiles “fill up” from…