Another puzzle giveaway :D

I don't understand how #4 could require thinking.. I don't see any riddles or anything, and all I can do is brute force it (which hasn't worked thus far, 20 numbers later)

Edit: lol nevermind I got it

Like a true adventure games lover, I was able to walk away for almost 3 seconds, before I went and quickly solved it.
I wont be entering though, because I was unable to make giveaways yet due to monetary problems.

Nice puzzle. Thanks.