Inhalation of dust, mist, or fumes containing beryllium can cause chronic beryllium disease, which restricts the exchange of oxygen between the lungs and the bloodstream. The International Agency for Research on Cancer (IARC) lists beryllium as a Group 1 human carcinogen. The National Toxicology Program (NTP) also lists beryllium as a carcinogen. Copper beryllium alloy containing less than 2.5% beryllium (in copper) is not designated as a carcinogen.
Do you know any of the friends’ parents? Maybe you can all gather some ideas together and have a more uniform policy on what’s banned and what might be fun alternatives.
Or, they have a hypervisor, so instead of needing to quit from inside, you just hit the magic button and go back to the console UI. Game is suspended and might resume after power off or switch, or not, depending on the system and user.
You could just ctrl-alt-del or window switch or whatever to get the same experience on a computer.