I've spent countless hours in Fallout 4 and might have played about five hours. The remainder was just a matter of a promise of enjoyment, with RuneScape gold that bloody 'kill the loot, then return' gameplay loop that tricked my brain into thinking that it was having fun. I've read your comments about Skyrim and how you've reverted back to it yet again. The whole of us.
And Old School RuneScape? I don't know. It's common to see the games that are time-sink that consume your time and you then complain about it online. However, RuneScape is unique. When I'm not playing, I'm not sure if I have an opinion on it. I just feel the music in my head and feel a pull bringing me back to it. It was discovered that it was using a mobile phone was a mishap. My family hasn't spoken to me in days.
RuneScape was among the pioneers. It was a game exclusively focused on engaging, which doesn't necessarily have to be paired with fun. This isn't to say that both are incompatible, it just means that there are strategies to keep you entertained even when you're not having enjoyment.
RuneScape is one of the best in its field. I've been enjoying the fan documentary, RuneScape Historical Timeline 1998 through 2020, on the development (it actually has affected every aspect in my daily life) and the game's developers were shocked at buy osrs infernal cape the players' ability to max out statistics in months rather than years.