I was insanely addicted to almost all OG flash games as a kid so I'd say all of the OG library by far and wide, hahaha
But I do have to join the masses on KQ I know it's probably dead for good as much as I want to lie to myself, but at least I made good memories of it
I would die of happiness if they brought KQ back. I had slow inernet but played all the time back then, I can't imagine what it would be like with faster internet. That game kept me busy for hours I swear.
I didn't jump on the Habitarium train until the last month so I don't remember as much about it.
I have such extreme FOMO over KeyQuest ;-; People talk about it all the time like it was the greatest game ever, but I have no idea what it is. I didn't rediscover neo until after it had come and gone.
I wish I knew what it was about... or maybe it's a blessing in disguise, since I can't miss what I never knew? xD Could it really have been that great?
To answer the question though... back when I was a kid, I remember playing some kind of... Usuki fashion game? I have no idea if it still exists, but I remember it being my fave c: