Unique AAA Games, And Unique Game Aspects

[Profrektius]

TallSilhouette said:

Trying to keep to the last couple gens (earlier's too easy):

Interacting with a giant AI controlled animal - as the primary gameplay, no less (The Last Guardian)
A full ecosystem of mechanical animals to interact with (Horizon)
Good open world stealth (Far Cry 3 & MGSV) (FP & TP, respectively)
Play, create, share game and world building (MediaMolecule games)
Bring a pulp adventure flick to life (Uncharted)
Bring the Wild West to life (RDR)
Competitive painting (Splatoon, if it counts)
Portal, nuff said

TLG, Splatoon, Portal, and probably Dreams are the ones that stand out the most for me, as the entire games are dedicated to something entirely unique.

I do like your choices and I would love to hear some examples from earlier generations as well. PS1, PS2, N64, Gamecube, Dreamcast, Xbox. No reason unique ideas if good couldn't be used again today in modern games.