One Up! - The Wicked Smart Travel Word Game

It's easy to One Up! Players take turns flipping over one tile over at a time, and try to make a word – first an "A", then an "R" and then a "T." Shout it out –"RAT!" Players keep turning over one tile at a time until another word of three or more letters can be made. But wait a sec! The game has wicked twist – any word can be stolen by any player by simply adding a letter. If an "M" is then turned over, I can call out "MART" and steal your RAT – it's my word now. But another player can snatch it back if an "S" is flipped over and they yell out "SMART." Damn! All words are in play at all times. The player with the most words wins.