Smash Up is a card game created by Paul Peterson and published by Alderac Entertainment Group. The objective of the game is to combine two different decks of cards to create a unique deck that can be used to battle against other players. The term 'smash up' refers to the act of combining two decks together. The crossword solutions for the term 'smash up' are TOTAL (5 letters), COLLISION (9 letters), and HEADONCOLLISION (15 letters). TOTAL refers to the combined TOTAL of the two decks, COLLISION refers to the act of combining the two decks, and HEADONCOLLISION refers to the intense battle that can occur when two decks are combined.