I'm used to "fixed scrolling" to be cases like the original Super Mario Bros.
, where you could only scroll to the right - what direction things can scroll is fixed by a built-in limitation.
"Auto-scrolling" is what this trope is actually covering - cases where the game automatically scrolls in a direction regardless of what your character does (the game may or may not kill the player character if they hit the scroll wall - platofrmers are more likely to, while shoot 'em ups are less likely to).
I think a Trope Transplant
is called for here, because the discussed trope is using the former's name for the latter concept. Moreover, I don't think we have the former concept troped at all (admittedly, it is fairly uncommon these days, as it was always fairly unpopular even back in the day).
EDIT: And I can think of several cases where they aren't exclusive - there are some games that auto-scroll in one direction but allow you to choose to scroll freely in the perpendicular axis (such as allowing you to choose to scroll up or down while moving things to the right). And, obviously, we have games like Super Mario Bros.
where you never deal with auto-scrolling.
edited 24th Mar '12 2:12:07 PM by 32_Footsteps