But during a recent sale of the game (for the reasonable price of three whole dollars), the world finally learned why these aliens were acting as if their mo-cap actors were having seizures. The problem? A single stupid typo.
In the game's coding, the monsters' AI is controlled by a "tether" system, which according to flaw-finding modder jamesdickinson963, "controls tactical position adjustment, patrolling, and target zoning" -- i.e. everything that would make aliens act as if they have brains in those weird oblong heads. However, one careless coder wrote "teather" instead of "tether" in a crucial line, meaning the AI never received the info it needed to develop more survival skills than the average drunken toddler.