Played it for a few hours. I thought it's awesome, especially for a FPS. Story is interesting, controls are good, graphics amazing (PS4), original soundtrack, etc. Best way to describe it: Halo & Mass Effect had a baby. That pretty much sums up my opinion and experience I think. You can clearly tell there's a Halo (Bungie) feel to it. Got some RPG elements so if FPS with some RPG is your thing - then I suggest you give the game a try.
But to be fair I've only played to level 4 so far. Wished I could play the game properly, but alas that must wait until the weekend.
Only negative so far is there are issues with co-op. But since this is an open world sort of FPS I was sort of expecting it to have some flaws on release.

I got the physical version of the Collector's Edition which was pretty cool. Came with a book (brief introduction to the game, history, etc) as well as a really cool thing to put on your computer desk. You hook it up to your PC via USB and it's the sims icon, which will glow in different colors depending on what mood your sim is in. It's not made from flimsy crappy material either - Steelseries made it. Collector's Edition also comes with in-game content (Deluxe Edition digital content - look below).

As far as I know the "limited" edition is just the regular one... It's just what they named it for some reason, no idea why. Maybe it comes with a few in-game items but that's it? The Deluxe Edition is a bit different. With the Deluxe Edition you get "Life of the Party Digital Content", "Up All Night Digital Content", "Awesome Animal Hats Digital Content", and The Sims 4 Digital soundtrack.