Each stage is also littered with item boxes, which hold a random item that a player has acquired and unlocked in Adventure mode or created in the Item Shop. They may also contain Power Stones. Items are extremely diverse. Damaging items range from guns, flamethrowers, gigantic hammers, a wide assortment of swords, to bear traps, roller blades, and even a magazine that can be thrown. Non-damaging items include food that will replenish health, shields for defense, elixirs for invisibility, adhesive sprays to slow your opponents, and wings for extra jumps. Cards that can be used to mix items can also be found in Adventure mode. Furthermore, most stages also have their own collection of unique items and fixtures that the player can use. For example, the submarine level comes with turrets, small planes to drop bombs, and icebergs to throw at opponents. Each level is also highly interactive, as players can use many of the stage elements themselves. All players can also gain extra height by jumping off a wall.