Mmorpg Like Mortal Online Are There Any Free Mmorpg Out There Where You Fight Other Online Players?

Are there any free mmorpg out there where you fight other online players? - mmorpg like mortal online

Please do not mention WoW or Runescape.

I am also looking for online games where players online in battle, and more challenge, more or less like a fight to their death in any way. Please help me, thank you.