Bob-omb Blast is one of the three Battle Modes appearing in Mario Kart: Double Dash!! and Mario Kart 8 Deluxe. Although the goal is to damage other players with opponents like normal Balloon Battle, it is unique in that all Items in the match are Bob-ombs.
Every single Item Box throughout all of the Battle Stages contain a Bob-omb, in which the players are supposed to throw at opponents. Now, Bob-ombs are a very... explosive Item, and constant use of them, especially when there can be 8 people playing on a single Nintendo GameCube, makes for a very deadly battle, with fiery detonations all around the arenas!
Depending on the number of players competing in the round, 3 to 4 empty star icons are on the bottom of each driver's screen. Whenever someone gets a hit with a Bob-omb, you achieve a star of the enemy's color (1st player is red, 2nd is blue, 3rd is green, and 4th is yellow [designated by tire and Bob-omb coloration]). Also, you take out other players and apprehend one of their stars, which prolongs the fight.
Filling up the star meter before all other competitors wins the game.
In Mario Kart 8 Deluxe, whoever has the most points when the time limit is up wins, if all of your balloons are popped, kiss half of you points goodbye!