Some of those are quite vague. Let me try some:
#50 Marvel vs Capcom 3
Well, I always try to be a little vague at first, especially when hinting games ahead of schedule. Don't want them to be guessed too easily straight away, and all that. You got #48 right, the other ones, nah.
#50: Donut County → there you are:
#49: Resident Evil
You have the right idea there with #50, but I'm afraid that ain't it.
50: Star Fox Zero
EDIT: It seems I've been ninja'd twice on SM3DW.
#46 is correct, and... well, you came close with #47. But no.