If that's true then how come Ubisoft released 2 AC games in 2014 on the exact same day? AC Unity for ps4/XBO and AC Rogue for ps3/360. It's simply because AC Unity used a radically upgraded version of the game engine for Unity, which allowed for things like hundreds of NPCs on screen. Things that weren't possible to port to ps3/360.
Like I said, not everything is scalable and can be ported. I mean why do you think Cyberpunk is not getting a release on Switch, even though they did port the Witcher 3?
It seemed like AC Unity was barely possible on the consoles they made it for. It ran like trash, had jarring pop in and the gameplay was basically the same.
The large crowds were neat, I assume not possible on last gen, but had no real significance to gameplay. I say this as someone who completed both games you mentioned.
I am simply suggesting Ubisoft could have made a version of AC Unity on 7th gen and capture the core gameplay just fine. The large crowds were really aesthetic.
AC Unity was actually a smaller scale game than previous entries. They put more detail inside buildings, but created a smaller world.
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