Lets say I must get at a -> B
There’s a gate involving the two.
In game one, this “Gate” is often a dungeon, full of traps and monsters. Each room comes with a challenge, dynamic events happen and a chance for me because the play to feel skilful and powerful in the manner I overcome those challenges.
In game two, this “Gate” is often a button around the door blocking the trail. So as to progress, I must press that button.. 150 times.
You'll find nothing challenging about this action. No skill required. No chance to prove my worth, or learn skills that further my familiarity with the action. No great stories about slaying the dragon, or obtaining a magical sword. Just a tedious, annoying and pointless obstacle.
That personally is the difference. Sure, you could be just “Slaying monsters and looting rooms” within the first game, even so the way it’s presented feels as though these include stuff that you need to do *along the way* on your goal.
Inside second game, the point *is* the pointless repetition of the banal task, that is neither interesting or challenging..