Here's everything available with the Xbox Game Pass on PC

At the Xbox E3 Briefing yesterday, Microsoft's Phil Spencer announced the Xbox Game Pass for PC. Just like its cousin on the Xbox One, the subscription program brings over 100 titles - at launch - to gamers on Windows 10. This, for the first time, also include Win32 titles.

Here's the complete list of everything that's in the Xbox Game Pass for PC at its launch:

ABZU
ACA NEOGEO METAL SLUG X
Apocalipsis
ARK: Survival Evolved
Astroneer
Battle Chasers: Nightwar
Battle Chef Brigade Deluxe
Battlefleet Gothic: Armada
Bomber Crew
Bridge Constructor Portal
Broforce
Brothers: a Tale of Two Sons
Book of Demons
Clustertruck
Crackdown 3
Crosscode
Die for Valhalla!
Disneyland Adventures
Everspace
Fez
Football Manager 2019
Forza Horizon 4 Standard Edition
Full Metal Furies
Gears of War: Ultimate Edition
Gears of War 4
Guacamelee 2
Halo: Spartan Assault
Halo: Spartan Strike
Halo Wars: Definitive Edition
Halo Wars 2: Standard Edition
Hatoful Boyfriend
Hellblade: Senua's Sacrifice
Hello Neighbor
Hollow Knight
Hotline Miami
Hydro Thunder Hurricane
Imperator: Rome
Into The Breach
Kingsway
Lichtspeer: Double Speer Edition
MARVEL VS. CAPCOM: INFINITE
Momodora: Reverie Under the Moonlight
Metro Exodus
Mindzone
Moonlighter
MudRunner
Mutant Year Zero: Road to Eden
Neon Chrome
Old Man's Journey
Operencia: The Stolen Sun
Opus Mangum
Ori and the Blind Forest: Definitive Edition
Orwell: Keeping an Eye on You
Oxenfree

Pony Island
Prey
ReCore
RiMe: Windows Edition
Riptide GP: Renegade
Rise of Nations: Extended Edition
Rise of the Tomb Raider
Rush: A Disney-Pixar Adventure
Ruiner
Samorost 3
Sea of Thieves: Anniversary Edition
Shadow Tactics: Blades of the Shogun
Shenmue I & II
Shoot n Merge 2048
Silence - The Whispered World 2
Sinner for Windows 10
Slay The Spire
Smoke and Sacrifice
Snake Pass
State of Decay 2
Stealth Inc 2
SteamWorld Dig 2
Sunset Overdrive
Super Lucky's Tale
SUPERHOT - Windows 10
Supermarket Shriek
Surviving Mars
Riverbond
Tacoma
Titan Quest Anniversary Edition
The Banner Saga
The Banner Saga 2
The Banner Saga 3
The Flame In The Flood
The Gardens Between
The Last Door: Season 2 Collector's Edition
The Messenger
The Stillness of the Wind
The Surge
The Turing Test
Thimbleweed Park
Thumper
Tyranny Gold Edition
Valkyria Chronicles
Vampyr
Void Bastards
Wandersong
Wargroove
Wasteland 2: Director's Cut
West Of Loathing
Wolfenstein II: The New Colossus
We Happy Few
Wizard of Legend
Zoo Tycoon: Ultimate Animal Collection

Microsoft appears to be having some trouble with its official Game Pass for PC catalog at the moment, with games disappearing at random. It's available here, if you wish to have a look.

At the moment, both the Xbox Game Pass for PC and Xbox Game Pass Ultimate (which includes the former) are discounted to 1$. After the $1 celebratory discount ends, Game Pass for PC will cost $4.99/mo "for a limited time," and finally jump to $9.99/mo at some point. Also, if you already subscribe to Xbox Live Gold or Xbox Game Pass for Xbox One, subscribing to the Xbox Game Pass Ultimate will upgrade that existing subscription.

If you are running the Windows 10 May 2019 Update, the best way to browse and download these games would be via the new Xbox app. Win32 games via the Store also require you to be on that Windows 10 version. If you haven't yet updated, it's possible to download UWP games via the Microsoft Store.