[@Slav]

Well, if it is a general MMORPG type of leveling system then you are probably right, but maybe it's a little bit different.

I've played games which took an interesting spin on the whole leveling. Some examples:

There was a game which I played where you could unlock perk slots with your levels, with which you could tailor the way you wanted to play as they offered slight bonuses compared to people who didn't have them unlocked.

There is a game where combat level and actual combat prowess are two separate entities, as combat was locked to Skills instead of your Overarching level that would increase through a combination of your combat skills. This way there can be some low level players with high combat capabilities, who usually focus on one or two combat skills to keep their levels low but their effectiveness is higher than it should be, and these are called Pures.

Then there was a leveling system where you achieved levels not by gaining experience, but completing achievements, so your actual level reflected your skill as a player more than the time you spent grinding.

There are even games which restrict your level in a zone, so you are regressed back to that level range but with added bonuses that you've unlocked and vice versa, where you may not have been a max level but it can boost you up to that so you can play with others.

So there are multiple ways leveling can be done, in ways that doesn't necessary restrict access to content. This world probably has a generic type of leveling system, but I'd like to know my options, is all.