As stated before, Fallout 3 was released back in 2008, which is why it is not officially compatible with Windows 10 (or Windows 8 and 8.1, for that matter). … To run Fallout 3 in Compatibility Mode, you need to: Navigate to Fallout 3 folder within your Steam folder.

Does Fallout 3 run well on steam?

It works just fine. You need to install GFWL(Games for Windows Live) and then install GFWL disabler from Nexusmods. Ignore the . ini fixes.

Does Windows 10 work with steam?

No, Steam is a 3rd party application and it will not run under Windows 10 in S Mode, you would need to switch Windows 10 out of S Mode, it is free to do so, though it is a one-way process . .. In the Switch to Windows 10 Home or Switch to Windows 10 Pro section, select Go to the Store.