Quake 4 doesn't work on Windows 10 out of the box as Microsoft has blocked the SafeDisc driver, requiring the 1.4.2 point release patch to get Quake 4 working. When you contact iD Software to explain the problem and ask for the latest patch, you get ignored. When you contact iD Software's CEO directly, Kevin Cloud, and explain the problem and ask for the patch, you get told to download it from a random third party site, and then get ignored. Don't support a developer that does not care about its customers.