Pit

Pits are an obstacle in every Level in The Impossible Game. Falling onto any piece results in death, like spikes. However, they can be avoided with the help of Blocks, and generally aren't that much of an issue. Normally, they exist to prevent the player from surviving drops which are supposed to be fatal, not being an independent obstacle per se. In fact, they don't appear on their own anywhere in the game, meaning players do not have to worry about them unless they fall off a block they were not supposed to fall from, in which case death is guaranteed.