Storm3D is a game engine that is used by various strategy & action games. It was initially used by Activision and later by Mad Doc Software. Here is a selection of titles, that use it:

• Battlezone
• Battlezone II
• Battlezone 98 Redux
• Empire Earth II
• Star Trek: Armada
• Star Trek: Armada II
• Star Trek: Legacy

There are two successors/derivatives from it, the Zero engine and the Mad3D engine.

• Moby Games on Storm3D
• The Mad Doctor’s Designer’s Diary on Trek Core