Xbox Live Gold and Xbox Game Pass Ultimate users can try three games for free this weekend.
The games this weekend are Halo: The Master Chief Collection, Borderlands 3, and Dirt 5. Each is also available at a discount over the weekend, and should you make a purchase, you can continue playing while keeping your Gamerscore and earned achievements.
Halo: The Master Chief Collection is currently in Season 8, and it is the final collection update for 2021. You can enjoy 100 tiers of new seasonal unlocks and content like new armors, a new matchmaking map, and campaign collectibles in Halo 3. The collection is on sale for 50% at $20. Also, Halo: Reach and Halo 3: ODST are both on sale for 50% off and will run you $5 and $2.50, respectively.