There is no "big" mods for MLB2K12 that you would be looking for. The first thing you would want to get is the global update as it includes most of the visual stuff to change things to 2K14. Second thing you may want to grab is the 2013 uniform updates. The 2014 uniform updates aren't out yet except for a couple of teams so far. Third, download the latest portrait update that is compatible with the latest roster update. Lastly, the stadium updates. Kindly ignore the global.iff update in this download as you will have already had a much more up to date version of that file. Download Comerica Park and Globe Life Park in Arlington separately as they were updated after the big stadium update was released. Everything else is free for you to download after all of this, like cyberfaces by scottybilly, more uniforms by DennisJames71, and additional stuff by the rest of the community. Welcome aboard.