Elite Dangerous: Horizons

Essential if you like the base game. Infact, essential even if you only kind of like the base game.
The Horizons DLC adds the following
-The ability to customize your character (minor)
-The ability to be onboard other players ships (cool, but not major)
-The ability to land on some planets and moons (MAJOR)
-The ability to interact with the Engineers to further customize your ship (MAJOR)
It may also add other things... but I don't remember them.

FOR PEOPLE HAVING ISSUES GETTING HORIZONS WORKING ON STEAM.
You don't need to do any of the Frontier website stuff the launcher tells you to do! Another user has posted the correct operations to get this running (but it's just a response to a review, easy to miss), as this is what Frontier support told him to do, I'm just going to put it here, where it's easier to find:
"Launch the standard base version of the game and under the top right 'Options' tab on the launcher select 'Log out machine'. From here you should be able to select the 'Steam Login' option.
This will make sure that all purchased content through Steam is recognised and you are able to get into the game and play the expansion."
This got it working for me, hope it helps others. And yes, this is some some cryptic stuff, no idea how they expect us to figure this out...

Amazing game. But, note, it is an 'open galaxy space simulator'. You will love that if you want an open galaxy space simulator, where you create your own story, explore, fight bandits and other humans for resources and rankings, and enjoy upgrading your ship. You probably won't like it if you think that is all 'grinding' and prefer a linear plot and story line which guides you from a starting point to a conclusion.
Personally, I think it is an amazing work of art. And even better in VR! It goes from strength to strength as Frontier continues to invest in the product, and is something that I keep coming back to and dipping my toe in every few months, and hope to continue to do so for the foreseeable future.

I don't say this lightly... I wish I could wipe my entire memory of this game SO THAT I COULD EXPERIENCE IT ALL AGAIN WITH FRESH EYES. Every second is a wonder and every discovery a fresh injection of energy. If only you could walk around this game would be everything every kid has ever dreamed of when they thought up their ultimate 'space game'. I have owned this game for about 3 years and still fire it up at least once a week. In VR especially it's an absolute JOY! So much so that I've actually been making a video series about the cockpits in roomscale VR. Here's a link to one of them if you're interested:
Yes the game is a grind, but a beautiful, delicious grind it is, and one that is well worth your investment. Over the Xbox and PC versions of the game I've put in about 2000 hours and have loved them all. If you're in the market for a space opera, rather than a quick paced space game, then this is one for you. Fly safe commander and I'll see you in the black!

The DLC is GREAT! but many people are having issues where they are in Launcher Update Loop. I got a fix for you, you dont have to wait for their stupid tickets to get replied and they cant even help they say the things we know.
How to fix:
1. Go to Help then Steam Support
2. Press Games,Software,Etc and Search for ED: Horizons Season Pass
3. Press I want to permanently remove this game from my account and confirm.
4. Start Elite Dangerous and you will see horizon Launch options is gone.
5. Now go to Steam Store then ED: Horizons Season Pass and add to cart then go to checkout
6. They will say its already in your library even if you have removed it.
7. Check for option Restore DLC. There will be a option where you can restore your purchase in the checkout page.
8. Restore it and Luanch Elite Dangerous and select Elite Dangerous Horizons.
9. Update loop is gone and now link your steam account with Frontier
10. Wallah now you can play Elite Dangerous Horizons and dont have to wait for the ticket to get replied.

Worth it, especially on sale.

Not bad, not worth anymore than maybe 10-15 bucks. I dont feel like horizons brought a whole lot but who tf am i.
I guess if its on one of steams many sales, get it. If not, maybe wait.