follows the same core principles as a standard installation but requires careful attention to the game's root directory, as portable files aren't automatically detected by standard mod managers.
Installing mods for a version of Tomb Raider 2013 (the standard edition) is actually more straightforward than the standard Steam install because you don't have to deal with protected system folders or automated cloud syncing. Method 1: Manual "Drop-In" (Easiest for Portable) tomb raider 2013 how to install mods portable