But only for a limited time.
Confirmed games include We Happy Few, Forza Horizon 4, and Hellblade: Senua's Sacrifice.
Arriving as part of next week's Anniversary Update.
UPDATE: Now official, due "later this year".
Fishing! Harpoons! Story quests! Crabs?!
Plus, pre-release test programme now open to all.
And the Merchant Alliance now gives better rewards.
"Mega update" announcement teased for March.
Microsoft "actively investigating" widespread reports of black-screen errors preventing sign-ins to Xbox One
UPDATE: All issues now "resolved".
And plans afoot for "more fluid, less clunky" combat.
Ho ho ho and a bottle of rum.
Fog! Kraken 2.0! Random skele ships! New skull forts!
Due early next year.
Crackdown 3, Sea of Thieves, Forza 4, and more.
Sails! Face paint! Coloured ship lanterns!
Plus a trailer for next week's Halloween event.
Plus word on the upcoming Festival of the Damned.
New biome! Rowboats! Volcanoes! More!
Still not quite shipshape.
Everything must glow.
UPDATE: Rare explains its telescopic wangs.
UPDATE: Now with in-game footage.
Plus there's a first look at Forsaken Shores.
Evolving story, weekly challenges, more.
Ghost ships, three-man Brigantine, and more.
And it's 1,998 gold.
Keg you believe it.
Next big content drops in July and September.
UPDATE: Rare reveals The Hungering Deep in full.
Coming to PC and Xbox One at the end of May.
UPDATE: Fix to address frequent disconnection errors rolling out now.
UPDATE: New dev video says private crews due next week, and more.
New ship, biome, and mysterious "AI threats".
It's a brig issue.
UPDATE: Legendary status achieved.
UPDATE: Fixed at last.
"We appreciate the patience and support".
UPDATE: Servers seemingly back in action.
And there's an Xbox One S bundle too.
Lore books! Live events! Gold skeletons! More!
Literally a P ARR stunt.
UPDATE: A winner is revealed!
Adds Merchant Guild quests! Pirate Fort tussles!
You've got to be shipping me.
Dead men do tell tales.
Checking everything's shipshape.
Press RB for more pirates.
Hurry up, we're starboard.
Hurry up launch, I capstan the wait.
More skeleton types! Beards and hooks! Curse clouds!
UPDATE: It be fixed.
UPDATE: Rare extends closed beta after rocky start.
I'd keel for one.
All Xbox One exclusives from Microsoft Studios will hit Xbox Game Pass the day they're released.
For pre-orderers and Insiders.
UPDATE: Includes exclusive DLC.
Full game out early next yarr.
Xbox One X, Age of Empires, Sea of Thieves and what else?
X button marks the spot.
"We will be looking for different kinds of people at different stages."
Which means cross-buy on Windows 10 and Xbox One.
"If we're still adding to this game in five years I'll be very happy."
It's mizzen 2016.
Gears of War 4! Crackdown 3! Sea of Thieves! More!