1. Mass Effect Trilogy (cheating, but 2 is my favorite)
2. Skyrim
3. The Witcher 3
4. Fable 2
5. Lost Odyssey

Honorable Mentions:
FFX
Oblivion

The first one is definitely the most memorable for me. Gears 5 is a very close second though.

I usually only keep games with replay ability and games that I love.

I've heard differently on Jedi: Fallen Order. I heard it plays pretty well.

Avengers looks meh.

I think both 360 and PS3 had a rough start. 360 had the red ring and failing hardware and PS3 had overheating problems.

How's Spyro? Been thinking about getting it.

As for the OP, thankful I have Game Pass so I didn't have to buy Gears 5, but just pre-ordered FIFA 20.

Probably RDR2 and Far Cry 5. Initially, Ryse.

I'd say so, but personally, not for many of the games you listed. Halo, Mass Effect, Assassin's Creed, CoD, Fable

The Witcher 3 and RDR2.

I'd love to have a Skyrim-like space sci-fi game. I'm more excited for TES6.