The standard Super Smash Bros. game mode. Pick any character available and choose your opponents (if you have no humans other than you playing). Then, pick a stage and fight! You can customize the game type to make it something other than time battle (such as stock battle where people have limited lives or coin battle where people collect coins to win). Items can be turned on or off depending on what you think. You can also fight in teams (there are three teams). Play to beat your opponents and show who's the best!
Battle mode allows the player to set a number of rules that are not allowed in the single player modes. These rules affect both the battle and the items that appear in the battle.
- The player can set the teams and characters that participate in the battle. They can also pick the computer players character and the skill level of the character.
- The player can pick the number of stock for the battle and can pick the time limit of the battle. (The stock can be set to unlimited stock while the time limit can be turned off.
- The players can set the items that can be used in battle. They can also set the frequency of the appearance of the items. The only items that the player cannot control is the container items and those can only be turned off if items are turned off.
- The player can turn the amount of points deducted from the character's score from a self-inflicted KO.
- The player can toggle fire on or off. If friendly fire is on, characters on the same team can inflict damage to each other while they are battling.
- The players can set handicaps for characters.