The engineering logs released last month revealed three root causes for the Qprey 2 house arrest failure:

The QPrey engine is designed to simulate predator-prey interactions within variable topographies. In Version 1.x, a significant logic error emerged when the environment parameter confinement_type was set to HOUSE_ARREST. This setting was intended to restrict agents to a specific safe zone while allowing complex internal movement. However, due to a floating-point precision error in the collision detection loop, agents would "stick" to the perimeter walls, rendering the simulation stagnant.

This paper outlines the transition from the broken "sticky" state to the corrected "elastic" state.

However, the game faced several delays and changes in its development. Despite its promising start, updates on Prey 2 were sparse and often indicated significant development issues. Eventually, in 2014, Bethesda announced that they were "suspending" development on Prey 2, which was essentially a euphemism for the game's cancellation.