The game must be really popular. I don't think I've ever played a game this crowded before, just maybe the early days of Lost Ark.
There is a mechanic in the game called Solo Dungeon, which means you can fight against bosses alone, but this was my first time.
So there's an option for solo playing. I thought it can be played only in multiplayer.
Game is already online, solo dungeon is a place where you can fight alone.
Now I understand it better. Thanks.