These games are amazing and I've used so many of them over the past few weeks via Zoom. Here in the UK we have a couple of game shows which would work great in PowerPoint if you were looking to develop any new material.
The Chase - https://www.itv.com/hub/the-chase/1a7842
Pointless - https://www.bbc.co.uk/programmes/b00rhg2r
Tenable - https://www.itv.com/hub/tenable/2a4724