[xaitv]

I feel like one of the most "extreme" examples here can be Path of Exile. Complexity there is high enough(I can't really think of a more complex game from the top of my head) that planning out how you're going to play(making a build) using external tools can be a whole game in itself.

Some people really like to go in depth on mechanics, look up every little mechanic on the wiki and optimize their build. Other people just copy what someone else did and mostly just play the actual game. Both are totally valid ways to play as long as you're having fun.

If I think about how the devs could've designed their game so these tools aren't needed I feel like that'd be nearly impossible without a massive time investment to bring basically those exact tools ingame. The easier path would be to reduce complexity which would make the game appeal less to players who play precisely because they like the complexity. So an external wiki and external tools seems like the right solution here to me.