It also comes with a detailed instruction. HeroSelect is NOT required: < Installation: > Simply copy all the files to your game folder, e.g. "C:\Program Files\Activision\Marvel - Ultimate Alliance\". BE SURE TO MAKE BACKUPS OF ANY FILES YOU'RE GOING TO REPLACE! To make Goblin playable, go to your game "data" folder and decompile herostat.engb file (using XMLB-COMPILE program - get it from www.nba2kstuff.org/mua/), replace any existing character with text from herostat.txt provided in this package, then recompile it. Remember to replace "menulocation = XX ;" with the menu location number of the character you are replacing.