Gravimetric torpedo

The Gravimetric torpedo was a starship weapon created by the Borg Collective and was used by their vessels in combat against enemy ships.

The weapon made use of advanced graviton inversion field to cause gravimetric shear in its target which causes severe structural damage. This made it perfect for an offensive role when the Borg have encountered a race that are resisting assimilation.

Though they did more damae than a standard Photon torpedo, they required far more energy to maintain.

(TNG video game: Starfleet Command III)