Wallop!

From BoardGameGeek:

Crash! Bang! Wallop! In this exciting game of strategy and luck. The leader which is chosing by who looks the strongest will shout WALLOP! the leader gets first dibs on action cards and every round a new leader is passed in clockwise order. Once the round starts all rounds only last for 30 seconds. This game is played simultaneously so there are no turns or turn order. First all players roll 2 D6 dice then picks 1 of the rolls to keep and draws an action card based on the number shown on the die. Action cards can be used at any time unless a card says otherwise. Always leave 1 action card face up of each number out in the playing area. Action cards help you deal damage block damage heal you and some may even have special effects no other card ability can do. At the end of a turn all cards you havn't used get discarded. Each player starts with 30 health and players keep taking turns until 1 survivor is left alive.