When I used to use Nexus. Mods for Fallout 3, steam wouldn t even recognize me as playing the game. I ve put a of hours into that game and. Steam says I only have 35 minutes played.Instead of saving to the regular John section of your save menu, it will create a John Modded section. Some people argue that mods will enable players to cheese achievements, but do Mods Disable Steam Achievements that was never ever an issue with Fallout 3, NV, and Skyrim.