The crossword solution for the term MAD ___ (PARTY GAME) is LIBS, a four-letter word. LIBS is a party game that is similar to the classic game of Jenga. The game involves stacking wooden blocks in a tower and then taking turns to remove one block at a time without toppling the tower. The player who causes the tower to topple is declared the loser. The game is often played with a timer, and the player who removes the most blocks before the tower falls is the winner.