It was remembered, however, for being a pioneer in video game physics. The Jurassic Park licensed game Jurassic Park: Trespasser exhibited ragdoll physics in 1998 but received very polarised opinions most were negative, as the game had a large number of bugs. The term ragdoll comes from the problem that the articulated systems, due to the limits of the solvers used, tend to have little or zero joint/ skeletal muscle stiffness, leading to a character collapsing much like a toy rag doll, often into comically improbable or compromising positions. When the character dies, his or her body begins to collapse to the ground, honouring these restrictions on each of the joints' motion, which often looks more realistic. A ragdoll is, therefore, a collection of multiple rigid bodies (each of which is ordinarily tied to a bone in the graphics engine's skeletal animation system) tied together by a system of constraints that restrict how the bones may move relative to each other. As computers increased in power, it became possible to do limited real-time physical simulations.
This had the advantage of low CPU utilization, as the data needed to animate a "dying" character was chosen from a set number of pre-drawn frames. Early video games used manually created animations for a character’s death sequences.
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