Warcraft

Warcraft is a series of Real Time Strategy and MMORPG games placed in a high fantasy universe, made by Blizzard Entertainment.

Allusions to Warcraft in Overwatch

 * Tracer's Blink ability is a likely reference to a Mage spell of very similar functionality.
 * One of the characters in Fighters of the Storm resembles Garrosh Hellscream.
 * Goldshire Pictures is a reference to the town of Goldshire, infamous for being a common role-playing spot. The company also bears coat of arms of Stormwind as its logo.
 * Some of Junkrat's quotes mirror those of goblins.
 * Kilrogg-Vision 3D is a reference to Kilrogg Deadeye, chieftain of the Bleeding Hollow clan (and who, fittingly, only has one eye).
 * Torbjörn's Ultimate ability, Molten Core, is named after a volcano-themed 40-man raid instance.
 * Rikimaru Ramen Shop has a sign resembling a murloc, a frog-like creature. When shot, the sign lets out sounds characteristic to murlocs.
 * Various objects associated with children are often decorated with cartoony depictions of murlocs, such as Timmy's cast from the Cinematic Trailer, and Alejandra's coin purse.
 * The sandcrawler the attackers spawn in on Temple of Anubis has a Murloc emblazoned on the side, along with some classic Mrglrglrlgl text.
 * The Murloc pictured bears great resemblance to the Bluegill Warrior Hearthstone card, with similar colourings on it's body.
 * Mei's mug is designed like the head of a baby murloc.