The Assassin’s Creed series is one of the biggest in gaming today. Ubisoft, its publisher, said in 2023 that it has sold more than 155 million copies of Assassin’s Creed games, making it one of the bestselling franchises in gaming history. And Xbox Game Pass subscribers can play one of the most recent entries in the series, Assassin’s Creed: Mirage, right now.

Xbox Game Pass Ultimate, a CNET Editors Choice award pick, offers hundreds of games you can play on your Xbox Series X, Xbox Series S, Xbox One and PC or mobile device for $20 a month. A subscription gives you access to a large library of games, with new ones, like Doom: The Dark Ages, added monthly, plus other benefits such as online multiplayer and deals on non-Game Pass titles.

Here are the games Microsoft is bringing to Game Pass in August. You can also check out other games the company added to the service in July, including early access to Grounded 2.

Assassin’s Creed Mirage

Game Pass Ultimate and PC Game Pass subscribers can play now.

Travel back in time to 9th century Baghdad in this 2023 installment of the popular Assassin’s Creed franchise. You play as Basim, a cunning street thief who joins an ancient organization known as the Hidden Ones. Through this organization, you’ll become a deadly master assassin and change the course of the world.

Aliens: Fireteam Elite

Game Pass Ultimate, PC Game Pass and Game Pass Standard subscribers can play now.

Microsoft is bringing this game back to Game Pass after removing it from the service in December 2022. In this survival shooter, you join an elite team of hardened marines as they fight through hordes of xenomorphs from the Alien franchise. You can customize your character and gear as you take on the ever-evolving threat and try to stop it from spreading.

Rain World

Game Pass Ultimate, PC Game Pass and Game Pass Standard subscribers can play now.

In this survival platformer, you’re a slugcat — both adorable and dangerous — in a broken ecosystem filled with overgrown plants and industrial waste. You have to survive in this world with nothing but your wits and trusty spear. But there are larger enemies out there who think you look like their next meal, so watch your step.

Citizen Sleeper 2: Starward Vector

New to Game Pass Standard.

Game Pass Standard subscribers can now join the fun of Citizen Sleeper 2: Starward Vector, a few months after Microsoft brought this title to Game Pass Ultimate. This sequel to one of 2022’s most popular RPGs launches on Game Pass on Day 1. You play as a sleeper, an emulated human mind in an artificial body, as you try to outrun the corporation that made you and the gang that wants to control you. You’ll commandeer a ship, recruit a crew and take on contracts as you try to build a better future for yourself in this dice-driven sci-fi game.

Lonely Mountains: Snow Riders

New to Game Pass Standard.

Get ready to fall down over and over again as you learn to master the snowy terrain in Lonely Mountains: Snow Riders. This is the sequel to Lonely Mountains: Downhill, but up to eight players can join cross-platform multiplayer matches, so you and your block-headed friends can enjoy the fresh powder together. That doesn’t sound lonely at all.

MechWarrior 5: Clans

New to Game Pass Standard.

Game Pass Ultimate subscribers could play MechWarrior 5: Clans in November, and Game Pass Standard subscribers can now play it as well. Step into a towering mech and battle your way across the galaxy in this latest installment of the MechWarrior series. Your territory is being invaded in this game, and you lead a squad of five other mech pilots to turn the invasion back. But this is no run-and-gun game. You’ll have to coordinate your moves with other units to create the perfect opportunities to attack.

Orcs Must Die! Deathtrap

New to Game Pass Standard.

The orcs are back in the latest entry in this tower-defense series, but your goal remains the same: Kill every last one of them. Each hero in this game has their own unique play style, so pick the one most fun for you. And team up with others in four-player co-op to obliterate the chaotic cartoonish hordes. Microsoft brought this title to Game Pass Ultimate subscribers in February, and Game Pass Standard subscribers can get in on all the orc-smashing fun now.

9 Kings (game preview)

Game Pass Ultimate and PC Game Pass subscribers can play on Aug. 14.

This game takes kingdom builders, deck builders and roguelikes and smashes them together to make something new. You’ll build your kingdom from a humble village to a huge citadel, but you’ll also have to defend your realm from other rulers. So you can use knights, warlocks, sentient mushrooms and more in major battles to fend off others. And you can loot your enemy’s deck to grow your empire and become the King of Kings.

These games are leaving Game Pass on Aug. 15

While Microsoft is adding those games to Game Pass soon, the company is also removing a few others from the service on Aug. 15. So you still have some time to finish any campaigns or sidequests before you have to buy these games separately.

• Anthem
• Persona 3 Reload
• Farming Simulator 22

For more on Xbox, discover other games available on Game Pass now, read our hands-on review of the gaming service and learn which Game Pass plan is right for you. You can also check out what to know about upcoming Xbox game price hikes.