If you’re looking for top single-player and co-op games on Steam this Winter Sale, here’s a tight list of must-have titles. It includes epic adventures like Red Dead Redemption 2 and The Witcher 3, story-driven hits like Mass Effect Legendary Edition and Detroit: Become Human, plus great indies like Terraria, Valheim, Stray, and Project Zomboid. All are highly rated and deeply discounted.

Check out these Steam deals under $20 that are too good to miss.

  • Mass Effect Legendary Edition - $5.99 (90% off), Action/RPG, Very Positive, May 2021.
  • The Witcher 3: Wild Hunt - $3.99 (90% off), RPG, Overwhelmingly Positive, May 2015.
  • Hogwarts Legacy - $5.99 (90% off), Action/Adventure/RPG, Very Positive, February 2023.
  • Detroit: Become Human - $3.99 (90% off), Action/Adventure, Overwhelmingly Positive, June 2020.
  • Batman: Arkham Collection - $8.99 (85% off), Action/Adventure, Overwhelmingly Positive, June 2015.
  • Red Dead Redemption 2 - $19.99 (80% off), Action/Adventure, Very Positive, December 2019.
  • Red Dead Redemption 2: Ultimate Edition - $19.99 (80% off), Action/Adventure, Very Positive.
  • It Takes Two - $7.99 (80% off), Action/Adventure, Overwhelmingly Positive, March 2021.
  • Resident Evil Village - $9.99 (75% off), Action, Very Positive, May 2021.
  • Sons Of The Forest - $9.29 (69% off), Action/Adventure/Indie, Very Positive, February 2024.
  • Death Stranding Director's Cut - $15.99 (60% off), Action/Adventure, Very Positive, March 2022.
  • Terraria - $4.99 (50% off), Action/Adventure/RPG, Overwhelmingly Positive, May 2011.
  • Valheim - $9.99 (50% off), Action/Adventure/RPG, Overwhelmingly Positive, February 2021.
  • Stray - $17.99 (40% off), Adventure/Indie, Overwhelmingly Positive, July 2022.
  • Peak - $4.95 (38% off), Action/Adventure, Overwhelmingly Positive, June 2025.
  • Project Zomboid - $13.39 (33% off), Indie/RPG/Simulation, Overwhelmingly Positive, November 2013.
  • Phasmophobia - $13.99 ( 30% off), Action/Indie, Overwhelmingly Positive, September 2020.
  • Megabonk - $7.49 (25% off), Action/Indie, Overwhelmingly Positive, September 2025.
  • Tiny Bookshop - $15.99 (20% off), Indie/RPG/Simulation, Overwhelmingly Positive, August 2025.
  • Hollow Knight: Silksong - $15.99 (20% off), Action/Adventure/Indie, Overwhelmingly Positive, September 2025.

You have until January 5, 2026, to grab these deals, so there’s no rush, take your time choosing the games you want.