Thin floors are a type of platform that Kirby and other playable characters can pass through either upward or downward. They can have a variety of different appearances, but are distinguishable by their particularly thin appearance, especially in comparison to surrounding 'hard' floors and ceilings. They have appeared in every main-series Kirby game since Kirby's Dream Land with the exception of Kirby and the Forgotten Land, as that game makes use of a full 3D environment, in which Thin Floors do not make practical sense.
From above, a character can pass through a thin floor they are standing on by crouching. In newer titles, this can also be done from the air by initiating a fast-fall. Despite characters' ability to do this, most airborne attacks cannot be used to pass through a thin floor, and most projectiles will not pass downward through them either.
From below, however, thin floors are not a hindrance in any way, and can be passed through as if they are not present. This includes projectiles that would normally be stopped by ceilings such as bombs and arrows. The only exception to this is Kirby 64: The Crystal Shards, where Kirby performs a 'get-up' animation when he passes upward through a thin floor. There are a few instances of platforms that can be passed through from below, but not from above. These are often referred to as 'semi-soft platforms' or 'one-way platforms'. They are typically distinct from standard thin floors in appearance.
The Super Smash Bros. series also makes use of thin floors.
Kirby falls through thin floors in Kirby's Adventure.
Artwork of Kirby dropping down through a thin floor from Kirby's Dream Land 3
Artwork of Kirby falling through a log-shaped thin floor in Kirby 64: The Crystal Shards
Kirby falls through some vines in Kirby: Triple Deluxe.
Kirby passing through another supposedly solid floor in Kirby: Planet Robobot
Names in other languages
- "You can move ↓ to fall through the thin floors in all the stages!" –Loading screen tip (Kirby Fighters 2)