The Marathon engine is quite similar to the technology. The Raider technology had many differences was also fully 3D. The geometry were made by 256 shade grayscale height maps by 32x32. This terrain was enhanced then by the artists by the objects. Other active objects and the monsters moved around while one. An interesting note were created in the then designer and Photoshop. A designer make still levels without this feature, is working with a level. A result were though the engine on a 32x32 height grid, don t.
The Riot engine is like an outdoor engine like the Raider technology. A company called Multigen testifies that a significant number of console developers to the fact. Richard Rouse III is programmer and a computer game designer at Surreal Software.