The short and sweet of the Havoc engine is that it gives you a cool splat effect as your NPC enemies are ripped to shreds right before your eyes. Then you get to see the corpse twitch and flog around for a little while - if you feel like watching that is.
Havok Physics, better known as simply Havok, is a physics engine developed by Irish company Havok. It is designed for computer and video games by allowing interaction between objects or other characters in real-time and by giving objects physics-based qualities in three dimensions. By using dynamical simulation, Havok allows for more lifelike worlds and animation, such as ragdoll physics or intelligence in massive falling things. The company has also released a Havok Animation. Havok was purchased by Intel in 2007.
Since the SDK's launch in 2000, it has been used in over 150 video and computer games. Those games have primarily been in the first-person shooter genre (the physics engine in Valve Corporation's Source engine uses a heavily modified version of Havok), however it has seen some use in other genres, such as in the Cyan Worlds adventure game "Uru: Ages Beyond Myst", THQ/Relic Entertainment's real-time strategy game, Company of Heroes, Soul Calibur IV, The Elder Scrolls IV: Oblivion, Saints Row,Halo 3, Saints Row 2, Nintendo's Super Smash Bros. Brawl,[3] Ensemble Studios' Age of Empires III, Timeshift, and Blizzard Entertainment's StarCraft II and Diablo III.[4] More recently its has been used in Fallout 3, an RPG developed by Bethesda Softworks.
- This information courtesy of Wikipedia.