Hi, I've been poundering about a online game I used to play on pc in the early 2000s, I'm 17 right now so I didn't pay much attention exactly wich year it was made.
It was a fighting game where you had 1 character (Could be more) and fought against another player. You didn't control the charcher(s), they fought by their own and you watched the battle.
When you won battles you lvl up and could make your character(s) stronger and I think you could buy weapons aswell, also you could have different kind of weapons like a net in wich you could capture your enemy for a short amount of time.
The character(s) you had was small, not that good character quality and the environment quality was quite simple aswell (I think the background of the battle was the same every battle you fought, some kind of castle hall perhaps?). When they fought there where a chance that they grabbed out their weapon, you couldn't order them to take out their weapon.
The quality was 2D and the camera was played from the side of the battle (The camera didn't move at all), also the list of enemies you could attack was simple aswell (Just pressed a name and you attacked him)
So the game was mostly just... attack, upgrade (Buy weapons?) and attack again!
The game didn't have much to it, I just found it very addicting for some reason
Also I might've played it on Y4.com or Y8.com, but not sure!
Sorry if it's not enough, but this is all I remember!