Warp Core Overload is a special weapon of the game Star Trek: Armada. It deactivates the propulsion system of up to four opposing ships in the vicinity. The targets are randomly chosen. It is researched at the Research Facility. The effect looks like this:

This weapon also targets cloaked ships, decloaking them in the process.

When trying to use this special weapon on a ship protected by a Corbomite Reflector, the effect will be reflected back to the casting ship. The Shield Remodulation on the other hand has no effect. An active Phase Cloak will protect against the Warp Core Overload.