Battle.net outlines Blizzard's plans to celebrate the third anniversary of the release of StarCraft II on Saturday. They offer a reworked 15th Anniversary ‘line up’ wallpaper and have boosted the experience points doled out by the real-time strategy sequel. Here's word: "For a limited time, we’ve increased the XP gains you get when you play StarCraft II by 25%. It’s the perfect time to log in and play some Multiplayer, or Versus A.I., or Training Mode games. Perhaps you’d like to level up the race you don’t play the least often. Now’s the time!"