As far as I know you can't repack yet, as you said, but you can change anything you can see, with the tool I linked earlier. The picture you uploaded is for the flags on the backs of the soldiers, this is the one I changed to for testing, and it works just fine in game too. The flags that show in the barracks are different, you can probably find them with the interface elements (not that it'd do you much good with no repack ability :D). You can change them too with TexMod though, but it'd be tiresome as you'd have to get one soldier of each nation, and export the nations flags one by one from ingame, than do the modding and add them to a package in TexMod to be changed on start. The workflow is like this: 1. Getting stuff out: Start TexMod Select XCOM executable as the target application Set TexMod to Logging Mode Choose output folder, set output to dds, set a key you want to use thats not mapped ingame (like F9) Click Run Game will start as normal (you'll see red text on top left corner with instructions how to use TexMod while the game is running) Use filtering (*) when you can see what you want to get, so you don't have to wade trough every single texture loaded in memory. Export the textures you want to change. Quit the game. Go to the directory you selected as output. You will see .dds files with names like XCOMGAME.EXE_0x415B9DE1.dds and a .log file containing the ID to each texture and pairs them with the actual file, you may rename the files to something that makes sense to you, and move them around to other folders, just be sure to move and change the .log file accordingly. Example: 2. To get things back to game: Run TexMod, go to Package Build. Select the .log file that contains the stuff you want in your package. Click build. ( you will be informed of the outcome, will see how many textures were added to the package) This will create a .tpf file, this contains your modified textures with the right addressing. 3. To play with your new textures. Change TexMod to Package Mode, and select the package files you want added for the current session. Click run. The game will run as nothing happened, except the textures in the packages will replace the corresponding textures as the game runs. Note: As far as I understand TexMod doesn't actually change anything in the game files, or modifies the game in any way. If you don't run the game through TexMod with packages selected everything will be back to vanilla. About the works, I think it's injecting stuff into the memory replacing the ones being loaded in there by the game, if there IDs match. This probably also means if you do retexture the whole game, it might have an impact on video or standard memory usage. But I couldn't pump out enough textures for any game to make a difference in performance so far :D:D. About my texture pack, still on the works, I just don't like the camo patterns yet.