Remastered: Log in to StarCraft: Remastered after March 6 to receive a commemorative 20th Anniversary UI Skin for StarCraft: Remastered.
: Log in to StarCraft II after March 6 to receive a special UI Skin for each race. Additionally, log in between March 6 and April 3 to receive a Portrait and Decal.
Log in to Diablo III after March 6 to receive Dominion's Revenge, a fearsome Battlecruiser-themed Pet.
Log in to Overwatch between March 6 and April 3 to receive the Sarah Kerrigan Ghost skin for Widowmaker.
World of Warcraft:
Between March 31 and April 6, /salute one of the following StarCraft-themed companion pets – Zergling, Grunty, Mini Thor, Baneling, or Zeradar – to receive the "Salute to StarCraft" Feat of Strength.
Heroes of the Storm:
Log in to Heroes of the Storm between March 27 and April 7 to receive a 20th Anniversary Portrait for Protoss, Terran and Zerg.
Play a StarCraft-inspired Tavern Brawl between March 21 and 25 to receive three Kobolds & Catacombs packs!