1980 — Pac-Man is first released

The highest-grossing and most well-known computer game of all time, Pac-Man was created by the Japanese company Namco. It first made an impact as an arcade game, but by the mid-eighties, it was available for purchase to use on home gaming consoles, and it has remained available on many gaming platforms ever since.

At the time, moral watchdogs worried about its effect on impressionable youth, but since hardly anyone who played it growing up went on to spend hours in dark surroundings listening to extremely repetitive electronic music while gobbling down a variety of pills, their concerns were clearly groundless.

Pac flyer.png
By May be found at the following website: The Arcade Flyer Archive, Fair use, Link

As mentioned in:

Pac-Man — Weird Al Yankovic
Hyperspace — Buckner & Garcia

May 22, 334 BCE — Alexander the Great defeats the Persian Army in the Battle of the Granicus

In the first of three major engagements during his Persian campaign, Alexander the Great and his forces defeated a numerically superior foe. The Persian forces were bolstered by the presence of Greek mercenaries, but hampered by their command structure, which consisted of feuding satraps – the Persian emperor Darius did not fight in this battle.

The battle took place on the road from Abydos to Dascylium (near modern day Ergili, Turkey), at the crossing of the Granicus River (modern day Biga Çay?) – near the site believed to have once been Troy. It was a near thing for Alexander, because the Persians had orders to specifically target him, their leaders having reasoned that Alexander’s forces would fall apart without his leadership.