If possible the MC with 'real' OP proof such as Individual skill or Game changing In game item/skill or similiar, for example 'Ranker Return' truly appreciate any Recom. -Still new here thanks.
Virtual World: Close Combat Mage The New Gate (LN) A Certain Middle-aged Man’s VRMMO Activity Log Praise the Orc!
If you don't mind original novels, guild wars or its other name boundless worlds is a pretty good vrmmorpg. The MC is very op but it's rationalized really well. It's on webnovel
Would you be fine with a novel where the planet becomes a game? Because The Earth is Online sounds like something you might like, it fits the conditions I think.