For the type of move that launches opponents downwards, see Spike.
A spike is a sharp object and a feature in many Super Smash Bros. stages, including Rumble Falls. The most infamous spike on the stage is a diagonally facing spike that deals extreme knockback. Many spikes of different sizes and colors also appear in The Subspace Emissary.
Spikes can also be used as Stage Builder parts, and deal 15 damage and set knockback to any character that touches them.