They're not charging money for their mod. This will be given away for free. The Kickstarter is simply as a fundraiser to get more talented designers and developers involved as well as promote the mod and get articles like this one written to gather interest. Some mods like Falskaar for Skyrim are just add-ons and, although they take a huge investment of time and energy, simply add content to an exiting game. StarCraft Universe is a re-working of the existing SC2 engine to build an MMO from the ground up. This is more akin to a team of modders creating the upcoming Elder Scrolls Online MMO as a mod for Skyrim. When all is said and done it will still be released for free and donors will get perks such as naming in-game NPC's, creating items for the game, and other in-game related perks. You do NOT need to donate or pay money for the mod.