I remeber when I was a children started with atari 64xl.
From this time when watching people playing minecraft.
So operating system can be from ice age it important working without problems. About gaming I changed mind happy with them what you want but if you searching newer games then go buying a new pc. It depends what user using a pc. Every some DE have plus and minus. Last time i used Cinnamon and it was very simple, more simple from Gnome but xfce is lighter. When now using Zorin with xfce.