HI,
The issue is Kernel-Power Event 41 it says "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
This event is mostly caused by a driver or hardware
Since the issue is related to playing games I will first suggest that you clean reinstall the Graphics card driver.
Uninstall the currently installed driver using DDU then download and install a different/older driver version from the PC/Graphics card manufacturer support site.
Also, update the BIOS if it's available.
I hope this helps. Feel free to ask back any questions and keep me posted.