💻 PC Gaming Sunday Deal Alert • Expires Monday 10:00 AM PT
Sunday evening is your final window to grab this week’s rotation of Steam weekend free games before promotional timers expire on Monday, September 28, 2026. Below is the complete breakdown of 100% Free-to-Keep permanent library claims alongside full-version Free Weekend multiplayer trials live right now on PC and Steam Deck.
Every weekend, Valve’s digital storefront runs two distinct types of zero-cost promotions: limited-time 100% off “Free to Keep” giveaways (where clicking “Add to Account” permanently binds the game to your Steam library forever) and Play for Free Weekend trials (which unlock the entire commercial game—including co-op campaigns and ranked multiplayer—until Monday morning at 10:00 AM PT / 10:30 PM IST).
To save you from scrolling through hundreds of store pages, we compiled every active promotion for Sunday, September 27, 2026, including file sizes, Steam Deck verification status, and carry-over save progression.
Active Steam Free Weekend Trials & Free-to-Keep Claims (Sept 27, 2026)
Make sure to add the permanent giveaways to your account first, then queue up your downloads for the limited-time multiplayer trials included in today’s Steam weekend free games lineup:
| Game Title & Genre | Promotion Type | Expiry Window | Steam Deck & Co-Op Support |
|---|---|---|---|
| Warhammer 40,000: Darktide (Co-Op Action) | Free Weekend Full Trial | Monday, Sept 28 (10:00 AM PT) | 4-Player Online Co-Op • Playable on Deck |
| Deep Rock Galactic (Sci-Fi Co-Op FPS) | Free Weekend Full Trial | Monday, Sept 28 (10:00 AM PT) | 1-4 Player Co-Op • Steam Deck Verified |
| Hearts of Iron IV (Grand Strategy) | Free Weekend Full Trial | Monday, Sept 28 (10:00 AM PT) | Single-Player & 32-Player MP • Playable |
| One-Armed Robber (Co-Op Heist Sim) | 100% Free to Keep Forever | Permanent Account Bind | 4-Player Online Heists • Controller Ready |
| The Finals: Season 4 Starter Pack | 100% Free to Keep Forever | Permanent Account Bind | Cross-Play Arena FPS • Steam Deck Verified |
| Once Human (Open-World Survival MMO) | 100% Free to Keep (No Pay-to-Win) | Permanent Account Bind | Full Squad Base Building & Boss Raids |
Download Size, Campaign Length & Save Carry-Over Matrix
Only have a few hours left on Sunday night? Use our download size and session-length guide below to pick which of the Steam weekend free games you can actually finish or grind with friends tonight:
| Game Title | Install Size | Best For Sunday Night | Progress & Achievements Carry Over? |
|---|---|---|---|
| Deep Rock Galactic | 3.5 GB (Ultra-Fast Install) | Instant 20-minute 4-player cave raids | Yes (100% Steam Cloud save & trophies) |
| One-Armed Robber | 1.8 GB (Instant Download) | Hilarious physics-based co-op bank heists | Yes (Permanent free ownership) |
| Warhammer 40K: Darktide | 52 GB SSD Required | High-intensity horde slashing with friends | Yes (Full class levels saved to account) |
| Once Human | 55 GB SSD Required | Long-term supernatural survival crafting | Yes (Permanent free-to-play progression) |
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How to Claim Permanent Giveaways from Your Mobile Browser
Even if you are away from your gaming PC or Steam Deck on Sunday afternoon, you never have to miss out on Steam weekend free games. Simply log into your account via the official Steam Mobile App (iOS or Android) or any mobile web browser, navigate to the promotional listing, and tap Add to Library.
For 100% Free-to-Keep promotions, claiming via mobile permanently registers the license to your account without downloading a single megabyte. For limited-time Free Weekend trials like Deep Rock Galactic, starting at least one session before Monday’s deadline also locks in your Steam Cloud save file in case you decide to pick up the game at 70% off during the post-weekend publisher sale. You can browse all active specials directly on the Official Steam Specials Hub.
