Playing Quake 4 on portable devices like the Steam Deck or other Windows-based handhelds. Minimum System Requirements to Keep in Mind:

: If you own an original retail disk, the CD key is usually valid for the software on that disk indefinitely. However, retail keys typically cannot be activated on Steam Official Platforms

Your (Windows 10, Windows 11, or Linux via Proton?)

Yes, Quake 4 has a strong, narrative-driven single-player campaign that continues the storyline from Quake II. Does it still work on modern Windows?

Since Quake 4 is a mid-2000s title, almost any modern laptop can handle it at max settings. Even on a budget USB stick, it should run "smooth as butter" if your machine meets these basic hurdles: Quake 4 No Disc - Quake3World