Obsidian Platform

A Obsidian Platform is a stylized Wood Platform that allows vertical movement by the player, certain enemies, and NPCs, in both up and down directions. The player can go down through a Obsidian Platform by pressing the down key while standing on one. Obsidian Platforms allow the passage of falling water. Most ranged weapons will travel through Obsidian Platforms; the Grappling Hook, Dual Hook, and Ivy Whip will grab them.

Because of the high mobility a player has while on them, Obsidian Platforms can be used in a variety of ways: as a walkway, a fast bridge to cross pits, or for roof access that keeps most enemies from getting through. Also, since Books, Candles, Clay Pots and other Furniture can be placed on them (except for torches and Crystal Shards), they can be used as a shelving for decorative purposes, or to pack more pieces of furniture into a smaller space.

Can be found in Ruined Houses in Hell. It was introduced to replace the Platforms in Hell and can support lava being on it.