Toe walking idiopathic toe walkers, a family link has been observed. Idiopathic toe walking can be described as bilateral toe walking with no orthopedic or neurological cause past the age of two. In this condition, children are able to voluntarily walk with the normal heel-toe pattern, but prefer to walk with the toe-toe pattern. In order for it to be considered idiopathic, the child's medical history should be clear of any neurological, orthopedic, or neuro-psychiatric conditions including other gait abnormalities. Two classifications of idiopathic toe walking have been established. The Alvarez's classification identifies the severity of the dysfunction based upon kinematics and
The Humans (video game) and "Dinolympics" respectively. Two sequels have been released: "The Humans 2: The Jurassic Levels" for Amiga and PC, and "The Humans III: Evolution—Lost in Time..." for Amiga (AGA) and PC. In 2009, it was rereleased for Windows under the name "The Humans: Meet the Ancestors!" Upon its release, "The Humans" was received very well, praised for its originality and decent graphics and music. "The Humans" is a puzzle game whose objective is to manipulate the given number of humans, taking advantage of abilities and tools, to achieve the level's goal, usually consisting of finding a certain tool, killing a certain