The Tectonic Payload weapons package can be used to create Tectonic Missiles. It can be used only with the Missile chassis.
A Tectonic Missile detonation causes an earthquake that raises the target terrain by 1–4 level of altitude, depending on the reactor type. A Fission Plant raises the terrain one level, a Singularity Engine up to four levels. Tectonic missiles are considered delivery platforms instead of combat units, and so may not target bases or units.
To target a square, move the missile to the desired target (cannot be a sea square) and press the ‘I’ key.