The floor is an environmental element appearing in each Super Smash Bros. game and is anything that a character can walk/dash on and/or stops the character from falling (as in being KO'd). Floors can cause damage and vertical knockback as in the track in Mute City or Port Town Aero Drive or can be set up to cause damage as with Venusaur's or Metagross' Earthquake. In Melee, sending the opponent towards a damaging floor and KOing him or her with it earns the player a "Kiss-the-Floor KO" bonus. Acid and lava also count as damaging floors; acid appears in Super Smash Bros.' and Melee's Planet Zebes and Brinstar stages respectively while lava appears in Brawl's Norfair stage. Spikes are also damaging floors and appear in Melee and Brawl as hazards. In Melee spikes tend to deal electric damage and in Brawl they do slashing damage. The term "floor" can also refer to floor recoveries, which are methods of getting off of the ground after falling from either tumbling or tripping.