Castlevania 2's day night sequence that isn't skippable, Dark Soul's PS3 jump controls (You hold "O" to run and press again to jump), the ragdoll physics being taken out of Dark Souls 2, Dead Rising's whole deal with constantly having to obtain Zombrex in the second game, Megaman's password system(just is weird), and MGGS3's camo system. I love it but it doesn't make sense half the darn time. Resident Evil 4's mechanic with the character Ashley. I'm sure that I can think of way more, but this is it for now.