Below are several resources I have found useful, or have helped to build:
The Redistricting Game: Teaches students about the challenges of redistricting, partisan gerrymandering, and the one-person-one-vote principal.
Congress Simulation: This simulation teaches students about the floor debate process, challenges of decision making, constituent demands, and procedural rules in the US House of Representatives. I use the vending machine simulation, and have added several additional roles to make it more appropriate to a college classroom, as well as workable for a slightly larger classroom. My additions can be downloaded here, the basic instructions are here.
Job Market Guide: This is a guide written by University of Texas Graduate students in 2017. It reflects our collective experience and advice with the academic market.
The FiscalShip Game: Teaches students about the challenges of balancing policy priorities while trying to manage spending.