What does the Tiberium Spike do?
The Tiberium Spike is a neutral structure that provides regular income to whoever holds it. Capture the Tiberium Spike with an engineer unit; you will begin receiving income immediately. A bug to be resolved in patch 1.05 causes Spikes to give less money if they have ever been damaged. The Tiberium Spike does not provide build radius and you cannot place buildings near it unless you deploy a Surveyor nearby (or if the Spike is close enough to your own base).