pmBLOX
pmBLOX is the only commercially available PM tool that uses agent-based simulation.
See for yourself. Download the free trail version of pmBLOX below (full functionality, but limited to 12 tasks).
Comparison to traditional PM Planning assumptions
pmBLOX uses the Dynamic Progress Method (DPM) and is a resource-based approach, which is much different from the traditional Critical Path Method (CPM) that is a duration-based approach.
overview of pmblox agent model
pmBLOX incorporates real-life feedback loops, such as management corrective actions when the project is behind schedule or over-budget.
the pmblox book: dynamic progress method
This book provides the background and motivation for developing pmBLOX and also acts as a basic user guide. Here is the link on Amazon: