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Buy Halo 3 PC Key
Where to buy Halo 3 at the best price? As of 21 Aug 2026 the cheapest option is £9.99 at Microsoft Store, out of 4 offers across 4 stores. The range reaches £12.70, so the distance between the first and the last listing can be wide even with a handful of sellers. You activate the key in Steam or another client, and it is worth checking the price history first. The game is also available on subscription (Game Pass Premium, Game Pass Ultimate, PC Game Pass), so check whether you already have it. The price ranks among the lowest we have recorded, cheaper on only 6% of days with data. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.
Buy in Official Store:
£9.99
Buy in Keyshops:
£10.94
In keyshops, the price is close to its historical low.
See price history
Keyshops (3)
DRM:
Steam
Subscriptions (3)
About Halo 3
Halo 3 - about the game
Halo 3 comes to PC as the next installment in Halo: The Master Chief Collection. Now optimized for PC, witness the Master Chief’s return to finish the fight between the Covenant, the Flood, and the entire Human race in this dramatic, pulse-pounding conclusion of the original Halo trilogy. With the fate of the galaxy hanging in the balance, the Master Chief returns to uncover an ancient secret hidden beneath the sands of Africa, which could hold the key to humanity’s salvation or destruction – an object that could change the tide of the Human-Covenant conflict.
Game Features:
• PC Settings/Optimizations: Halo 3 is now optimized for PC and looking better than ever at up to 4k UHD and at 60+ FPS.* Other PC native settings include customizable mouse and keyboard support, ultrawide support, FOV customization, and more.
• Campaign: Experience the next chapter in the Halo saga and fight your way through 11 unforgettable missions.
• Multiplayer: Continue your Halo adventure with 24 multiplayer maps from the iconic Halo 3, featuring a completely updated progression system in Halo: The Master Chief Collection.
• Forge & Theater: Create new ways to play with the iconic Forge tool and utilize the Theater to capture and share your favorite moments with the community
Historical low
Price history from official stores
£8.99
Microsoft Store
5 months ago
Price history from keyshops
£8.78
G2Play
1 months ago
FAQ
9 questionsBefore you start looking for a cheap Halo 3 PC key, check the essentials. Developed by 343 Industries, Bungie, Saber Interactive. Published by Xbox Game Studios. PC released date: 14 Jul 2020. Genres: Action.
Where to buy a cheap Halo 3 Steam key or CD key?
Using our price comparison and verified discount codes, you can buy a Halo 3 key for as low as £9.99. This deal is available at Microsoft Store and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest Halo 3 price on PC. Check the Halo 3 price history to buy at the best moment.
What is the latest Halo 3 Steam price?
We don't have a current Steam Store price for Halo 3. The game may be temporarily unavailable or not yet listed on Steam.
Halo 3 PC sale & discount - all in one place
Our price tracker covers both official retailers and key marketplaces, so you can find Halo 3 on sale even outside seasonal promotions. We currently detect 4 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.
Does Halo 3 have GeForce NOW support?
Based on our data, Halo 3 is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.
Is this a good time to buy Halo 3?
The cheapest offer came most often from G2A: 44 of 90 days with data. The current price ranks among the lowest we have seen: it was cheaper on only 6% of days with data. The price reached its historical low on only 1 day out of 90 days with data. We have recorded offers from 4 stores in total, and from 1 in the most recent reading.
Can I buy Halo 3 on Steam?
There is no official Halo 3 Steam store page at this time, but 3 offers with Steam DRM are available on XD.deals. Buy a Halo 3 Steam key from one of the listed sellers to activate and play on Valve's platform.
Can I play Halo 3 on Steam Deck?
Not at this time. Valve marks Halo 3 as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.
Is Halo 3 on PC Game Pass or other subscriptions?
Yes. Based on our data, Halo 3 is available on: PC Game Pass. If you are subscribed, you can play without buying a separate key.
Can I buy Halo 3 here?
No - XD.deals is not a store. We are a price-comparison service that tracks the best Halo 3 deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.
Best prices for Halo 3
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