I was about 8 in 2003 (I may have been 9 in 2004 instead) and my neighbours were sick of me coming over to bug them all the time because I just required endless attention and they were very nice to me. So the two youngest brothers came over and copied over a flash drive of either VBA or no$GBA, and about 7 or 8 GBA games. I had no idea this was even possible, and it blew my fucking world up. Of those games, I remember Pokemon Sapphire, Legacy of Goku II and Digimon Battle Spirit most clearly - though I probably racked up over 500 hours in Sapphire alone before we moved house, as it kickstarted my Pokemon obsession for the next two decades. Only in the last 18 months have I finally chilled out and not played any of the games much at all.